the.com/cave
the cave is where humanity learned to draw before it learned to write
oldest artIndonesian cave paintings exceed 45,000 years old
deepest knownGeorgia's Veryovkina drops over 2,200 meters down
eyeless lifecreatures evolve blindness in permanent darkness
living rockstalactites grow about one inch per century
crystal giantsMexico's Naica holds 36-foot selenite beams