cave explorer

• spelunkerRecreational cave explorer
• caverUnderground hollow explorer
• undergroundBelow ground or countercultural
• cavernLarge natural underground chamber
• stalactiteHanging cave mineral deposit

stalagmite · headlamp · darkness · descent · rappel · limestone · grotto · subterranean · abyss · passage · crawlspace · helmet · rope · expedition · chamber · echo · dripping · bat

• cavescave, cavern, caves, caverns, grotto
• caverscaver, cavers, spelunker, spelunkers, potholer
• Moral Dilemmastrolley problem, prisoner's dilemma, ticking bomb, tragic choice, mercy killing
• naturalistsCharles Darwin, naturalist, field researcher, botanist, Carl Linnaeus
• fieldworkersinterviewer, surveyor, land surveyor, researcher, pollster
• rockhoundsrockhound, rock hound, lapidary