Lava tubes are familiar on Earth. They form when the surface of a lava flow hardens while molten rock continues to drain ...

For most organisms on Earth, rocks are objects, not food. But for one oddball microbe, desert limestone seems to have been on ...

They found evidence of "very, very big tube volumes." The post Scientists Confirm Massive Underground Tunnels on Venus ...

While most of us take the ground beneath our feet for granted, written within its complex layers, like the pages of a book, is Earth's history. Our history. Research shows there are little-known ...

Massive lava-carved tunnels have been confirmed beneath the surface of Venus, providing the strongest evidence yet that the ...

Researchers confirm with radar and laser the existence of hidden passages beneath Milan's Sforza Castle, anticipated by Leonardo's sketches.

The Narusawa Ice Cave is a natural lava tunnel that formed during a violent eruption of Mount Fuji in A.D. 864. Every winter, the cave grows giant ice pillars due to its freezing temperatures.

This applies to the Shanghai Outer Ring Tunnel: a major travel artery in China’s largest city, which runs for almost 3 km ...