Humans Sheltered in This Lava Tube for Thousands of Years
Three needs are famously fundamental to survival: food, water, and shelter. According to new research, ancient humans had at least two of those three needs met by a nearly mile-long…
Earth’s 8 Weirdest Cave Systems
Speaking of cliché, yes. I am including the deepest cave in the world on this list. But can you blame me? Part of the wonder—and indeed, terror—of the world’s subterranean…