In Belize’s Actun Tunichil Muknal cave, a sacred Maya site, plants grow in darkness, sparking concerns about how tourism affects its fragile ecosystem.

Why it's awesome: Deep inside one of Gabon's cave systems lives an unusual population of orange dwarf crocodiles. They live in complete darkness, feast on bats and swim in liquid guano (aka bat poop.) ...

Deep within Gabon's Abanda Caves, a remarkable discovery has been made - a unique population of cave crocodiles, adapted to ...