TOPSHOT - This photo taken late on February 24, 2021 in Porto di Riposto, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

TOPSHOT - This photo taken late on February 24, 2021 in Porto di Riposto, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Porto di Riposto, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Porto di Riposto, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Porto di Riposto, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Porto di Riposto, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

CATANIA, ITALY - FEBRUARY 24: Eruption at Mount Etna is seen from Zafferana Etnea as the sixth paroxysm from the South East crater of Etna occurred in nine days, in the late evening, near Catania, Italy on February 24, 2021. There was an increase in strombolian activity in the Southeast crater which produced very high lava fountains and large lava flows towards the desert valley of Valle del Bove. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 24: Eruption at Mount Etna is seen from Zafferana Etnea as the sixth paroxysm from the South East crater of Etna occurred in nine days, in the late evening, near Catania, Italy on February 24, 2021. There was an increase in strombolian activity in the Southeast crater which produced very high lava fountains and large lava flows towards the desert valley of Valle del Bove. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 24: Eruption at Mount Etna is seen from Zafferana Etnea as the sixth paroxysm from the South East crater of Etna occurred in nine days, in the late evening, near Catania, Italy on February 24, 2021. There was an increase in strombolian activity in the Southeast crater which produced very high lava fountains and large lava flows towards the desert valley of Valle del Bove. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 24: Eruption at Mount Etna is seen from MIlo village as the sixth paroxysm from the South East crater of Etna occurred in nine days, in the late evening, near Catania, Italy on February 24, 2021. There was an increase in strombolian activity in the Southeast crater which produced very high lava fountains and large lava flows towards the desert valley of Valle del Bove. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 24: Eruption at Mount Etna is seen from MIlo village as the sixth paroxysm from the South East crater of Etna occurred in nine days, in the late evening, near Catania, Italy on February 24, 2021. There was an increase in strombolian activity in the Southeast crater which produced very high lava fountains and large lava flows towards the desert valley of Valle del Bove. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 24: Eruption at Mount Etna is seen from MIlo village as the sixth paroxysm from the South East crater of Etna occurred in nine days, in the late evening, near Catania, Italy on February 24, 2021. There was an increase in strombolian activity in the Southeast crater which produced very high lava fountains and large lava flows towards the desert valley of Valle del Bove. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 24: Eruption at Mount Etna is seen from Fleri area as the sixth paroxysm from the South East crater of Etna occurred in nine days, in the late evening, near Catania, Italy on February 24, 2021. There was an increase in strombolian activity in the Southeast crater which produced very high lava fountains and large lava flows towards the desert valley of Valle del Bove. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 24: Eruption at Mount Etna is seen from MIlo village as the sixth paroxysm from the South East crater of Etna occurred in nine days, in the late evening, near Catania, Italy on February 24, 2021. There was an increase in strombolian activity in the Southeast crater which produced very high lava fountains and large lava flows towards the desert valley of Valle del Bove. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

TOPSHOT - This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

TOPSHOT - This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs. (Photo by Giovanni ISOLINO / AFP)

TOPSHOT - This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows watching lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs. (Photo by Giovanni ISOLINO / AFP)

APTOPIX Flames and smoke billowing from a crater, as seen from the southern side of the Mt Etna volcano, tower over the city of Pedara, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

Flames and smoke billowing from a crater, as seen from the southern side of the Mt Etna volcano, tower over the city of Pedara, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

Flames and smoke billowing from a crater, as seen from the southern side of the Mt Etna volcano, tower over the city of Pedara, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

APTOPIX Flames and smoke billowing from a crater, as seen from the eastern side of the Mt Etna volcano, are framed by the remains of a building that collapsed after an October 1984 quake in Fleri, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

A fiery river of glowing lava flows on the north-east side of the Mt Etna volcano near Milo, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

A fiery river of glowing lava flows on the north-east side of the Mt Etna volcano near Milo, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

APTOPIX A fiery river of glowing lava flows on the north-east side of the Mt Etna volcano engulfed with ashes and smoke near Milo, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

Lava and smoke are belched out from a crater as seen from the north-east side of the Mt Etna volcano near Milo, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

Glowing lava is seen from the north-east side of the Mt Etna volcano engulfed with ashes and smoke near Milo, Sicily, Wednesday night, Feb. 24, 2021. Europe's most active volcano has been steadily erupting since last week, belching smoke, ash, and fountains of red-hot lava. (AP Photo/Salvatore Allegra)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurred. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows a resident taking pictures of lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows watching lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows residents taking pictures of lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs. (Photo by Giovanni ISOLINO / AFP)

This photo taken late on February 24, 2021 in Zafferana Etnea, Sicily, shows lava flowing along the sides of the southern crater of the Etna volcano as a new eruptive episode of tall lava fountains, known as paroxysm, occurs. (Photo by Giovanni ISOLINO / AFP)

APTOPIX Lava flows from the Mt Etna volcano, near Catania in Sicily, southern Italy, Tuesday, Feb. 23 , 2021. The explosion started before midnight on Monday night, provoking a huge eruption plume that rose for several kilometers from the top of Etna, as reported by The National Institute of Geophysics and Volcanology, Etneo Observatory. (AP Photo/Salvatore Allegra)

Lava flows from the Mt Etna volcano, near Catania in Sicily, southern Italy, early Tuesday, Feb. 23 , 2021. The explosion started before midnight on Monday night, provoking a huge eruption plume that rose for several kilometers from the top of Etna, as reported by The National Institute of Geophysics and Volcanology, Etneo Observatory. (AP Photo/Salvatore Allegra)

The moon is partially seen in the sky as lava flows from the Mt Etna volcano, near Catania in Sicily, southern Italy, early Tuesday, Feb. 23 , 2021. The explosion started before midnight on Monday night, provoking a huge eruption plume that rose for several kilometers from the top of Etna, as reported by The National Institute of Geophysics and Volcanology, Etneo Observatory. (AP Photo/Salvatore Allegra), APTOPIX

Lava flows from the Mt Etna volcano, near Catania in Sicily, southern Italy, early Tuesday, Feb. 23 , 2021. The explosion started before midnight on Monday night, provoking a huge eruption plume that rose for several kilometers from the top of Etna, as reported by The National Institute of Geophysics and Volcanology, Etneo Observatory. (AP Photo/Salvatore Allegra)

Smoke fills the sky during an eruption of Mt. Etna volcano, near Catania in Sicily, southern Italy, early Tuesday, Feb. 23, 2021. The explosion started before midnight on Monday night, provoking a huge eruption plume that rose for several kilometers from the top of Etna, as reported by The National Institute of Geophysics and Volcanology, Etneo Observatory. (AP Photo/Salvatore Allegra)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania, Etna seen from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania, Etna seen from the port Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

2/23/2021 - Etna eruption south-east crater photographed from Catania Editorial Usage Only (Photo by IPA/Sipa USA)

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Etna eruption southeast crater photographed from Catania, Italy on February 23, 2021. Photo by DAVIDE ANASTASI/IPA/ABACAPRESS.COM

Lava spews during an eruption of Mt. Etna volcano, near Catania in Sicily, southern Italy, late Monday, Feb. 22, 2021. The explosion started before midnight on Monday night, provoking a huge eruption plume that rose for several kilometers from the top of Etna, as reported by The National Institute of Geophysics and Volcanology, Etneo Observatory. (AP Photo/Salvatore Allegra)

Smoke fills the sky during an eruption of Mt. Etna volcano, near Catania in Sicily, southern Italy, late Monday, Feb. 22, 2021. This is the fifth episode in a series of Mt. Etna eruptions which have been occurring over the past week. (AP Photo/Salvatore Allegra)

Smoke fills the sky as Mt. Etna volcano erupts, near Catania in Sicily, southern Italy, late Monday, Feb. 22, 2021. This is the fifth episode in a series of Mt. Etna eruptions which have been occurring over the past week. (AP Photo/Salvatore Allegra)

2/22/2021 - Etna the fifth paroxysm with very high lava fountains, the indomitable etna Editorial Usage Only (Photo by IPA/Sipa USA)

2/22/2021 - Etna the fifth paroxysm with very high lava fountains, the indomitable etna Editorial Usage Only (Photo by IPA/Sipa USA)

2/22/2021 - Etna the fifth paroxysm with very high lava fountains, the indomitable etna Editorial Usage Only (Photo by IPA/Sipa USA)

2/22/2021 - Etna the fifth paroxysm with very high lava fountains, the indomitable etna Editorial Usage Only (Photo by IPA/Sipa USA)

2/22/2021 - Etna the fifth paroxysm with very high lava fountains, the indomitable etna Editorial Usage Only (Photo by IPA/Sipa USA)

2/22/2021 - Etna the fifth paroxysm with very high lava fountains, the indomitable etna Editorial Usage Only (Photo by IPA/Sipa USA)

2/22/2021 - Etna the fifth paroxysm with very high lava fountains, the indomitable etna Editorial Usage Only (Photo by IPA/Sipa USA)

Etna the fifth paroxysm with very high lava fountains, the indomitable etna. View of Fornazzo, Italy on February 22, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Etna the fifth paroxysm with very high lava fountains, the indomitable etna. View of Fornazzo, Italy on February 22, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Etna the fifth paroxysm with very high lava fountains, the indomitable etna. View of Fornazzo, Italy on February 22, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Etna the fifth paroxysm with very high lava fountains, the indomitable etna. View of Fornazzo, Italy on February 22, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Etna the fifth paroxysm with very high lava fountains, the indomitable etna. View of Fornazzo, Italy on February 22, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Etna the fifth paroxysm with very high lava fountains, the indomitable etna. View of Fornazzo, Italy on February 22, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Etna the fifth paroxysm with very high lava fountains, the indomitable etna. View of Fornazzo, Italy on February 22, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 21: A photo taken from the village of Milo near Catania shows eruption at Mount Etna in the early night of February 21, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 21: A photo taken from the village of Milo near Catania shows eruption at Mount Etna in the early night of February 21, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 21: A photo taken from the village of Milo near Catania shows eruption at Mount Etna in the early night of February 21, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 21: A photo taken from the village of Milo near Catania shows eruption at Mount Etna in the early night of February 21, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 21: A photo taken from the village of Milo near Catania shows eruption at Mount Etna in the early night of February 21, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 21: A photo taken from the village of Milo near Catania shows eruption at Mount Etna in the early night of February 21, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 21: A photo taken from the village of Milo near Catania shows eruption at Mount Etna in the early night of February 21, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

CATANIA, ITALY - FEBRUARY 21: A photo taken from the village of Milo near Catania shows eruption at Mount Etna in the early night of February 21, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Salvatore Allegra / Anadolu Agency/ABACAPRESS.COM

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Giarre Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Nicolosi Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Nicolosi Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Giarre Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Nicolosi Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Zafferana Etnea. Sunset with the south east crater and the new vent steaming Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south east crater, seen from Zafferana Etnea Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south east crater, seen from Zafferana Etnea Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south east crater, seen from Zafferana Etnea Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south east crater, seen from Zafferana Etnea Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Giarre Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Giarre Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south east crater, seen from Zafferana Etnea Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south east crater, seen from Acireale Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Giarre Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south east crater, seen from Acireale Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Nicolosi Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Giarre Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Giarre Editorial Usage Only (Photo by IPA/Sipa USA)

2/20/2021 - Etna fourth paroxysm of the south-east crater, seen from Giarre, in the photo of the Giarre motorway exit Editorial Usage Only (Photo by IPA/Sipa USA)

Eruption at Mount Etna in the early night in village of Nicolosi near Catania, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Eruption at Mount Etna in the early night in village of Nicolosi near Catania, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Eruption at Mount Etna in the early night in village of Nicolosi near Catania, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Eruption at Mount Etna in the early night in village of Nicolosi near Catania, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Eruption at Mount Etna in the early night in village of Nicolosi near Catania, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Eruption at Mount Etna in the early night in village of Nicolosi near Catania, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM

Eruption at Mount Etna in the early night in village of Nicolosi near Catania, there was a major increase in volcanic activity that led to a paroxysmal event at the Southeast crater for the fourth time in the past six days, in Italy on February 21, 2021. Photo by Angela Platania/IPA/ABACAPRESS.COM