the.com/speleology
the science of going underground because the surface got boring.
name originFrom Greek spelaion, meaning cave.
living fossilsCaves preserve creatures unchanged for millions of years.
eyeless lifeMany cave animals evolved away their useless eyes.
deepest reachKrubera Cave plunges over 2,000 meters down.
new frontierEarth's caves remain largely unmapped and unexplored.