The Mysterious World of Caves and Caverns: Ancient Man's Home Sweet Home (Slideshow)

glacier cave photo
Image credit: Philippe Bourseiller/Getty Images

There is, perhaps, nothing more primordial than a crackling fire in an otherwise-dark cave. Before civilization, before agriculture, we are told, humans sought shelter and found it in caves. They were humankind's first homes—and they continue to inspire our imaginations today.

The Mysterious World of Caves and Caverns: Ancient Man's Home Sweet Home Slideshow

Tags: Conservation

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