Volcanologists from the University of Mainz fly a drone that collects data from gas emissions from the crater of La Fossa volcano, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

Researcher Tjarda Roberts from the CNRS in Paris shows tests gathered during a mission to collect data from gas emissions in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

A vulcanologist from the University of Munich prepares a drone with a mirror used to reflect a laser and collect data from gas emissions in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

A picture shows a locust killed by sulphuric gas in the crater of La Fossa, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

People walk on the edge of the crater of La Fossa, on Vulcano Island, in the Aeolian Archipelago of Sicily, on 9 July 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

Tourists walk down the path of the crater of the La Fossa on Vulcano Island, in the Aeolian Archipelago of Sicily, on 9 July 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

Volcanologists from the University of Mainz fly a drone that collects data from gas emissions from the crater of La Fossa volcano, on Vulcano Island, one of the seven islands of the Aeolian Archipelago of Sicily, on July 9, 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)

This aerial view shows people walking on the edge of the crater of La Fossa, on Vulcano Island, with Lipari and Salina islands in the background, in the Aeolian Archipelago of Sicily, on 9 July 2026. A team of researchers from Germany are testing a new system for measuring volcanic gases to better anticipate future eruptions. Hovering over the crater of La Fossa, a drone positions itself in front of a laser beam set at the edge of the chasm on Vulcano, off Sicily, and collect data. (Photo by Marco Bertorello / AFP via Getty Images)