First direct evidence of underground lava tube on Moon’s surface found

For more than 50 years, scientists have speculated about hidden lava caves on the Moon. 

Thanks to an international team led by the University of Trento, Italy, scientists have the first-ever confirmation of a lava tube in the lunar subsurface.

Lava tubes are a fascinating volcanic feature. These underground tunnels are produced by lava that formerly flowed across the Moon’s surface. The outer layer cooled and formed first, functioning as a shell. Meanwhile, the molten rock within continued to flow before draining away. This procedure left a hollow, extended chamber under the surface.

“These caves have been theorized for over 50 years, but it is the first time ever that we have demonstrated their existence,” said Lorenzo Bruzzone, professor at the University of Trento.