00:006,000 cubic kilometers of magma.
00:02And almost nothing on the surface to give it away.
00:05Scientists have found an enormous body of volcanic fluid beneath Tuscany,
00:10sitting 8 to 15 kilometers down.
00:12To put that volume in perspective,
00:15the researchers say it equals about 2.4 billion Olympic swimming pools.
00:19That puts it in the same class as supervolcanic systems like Yellowstone National Park.
00:24So how do you find something invisible?
00:27The team used ambient noise tomography,
00:29It works like an X-ray of Earth's crust,
00:32reading faint vibrations constantly produced by ocean waves, wind, and human activity.
00:37They deployed around 60 high-resolution sensors.
00:41Seismic waves slow down when they pass through hot or partly molten rock.
00:46And that slowdown revealed the magma.
00:49Matteo Lupi, who led the study, said they knew the region was geothermally active,
00:53but did not realize it held this much magma.
00:56Researchers stress it poses no current threat.
00:59And the method may help find geothermal energy.
01:03Disclosure.
01:03This video contains stock footage and content created or enhanced,
01:06using AI-assisted tools, AI-generated.
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