Scientists Discover a Mysterious Hole on Mars: What’s Inside Could Be Key to Keeping Astronauts Alive There
Could this be a gateway to subterranean shelters for future explorers?
Tag: lava tube
Humans hid in this lava tube in Saudi Arabia for thousands of years
The site has been known for decades but this is the first proper investigation, and it yielded some notable finds.
Mysterious Oregon Lake Disappears into Lava Tunnel
Every year, in Oregon, a mysterious lake fills up with snow melt, and then every year it disappears; it's a ...
