Related Clues:
- Emulates a pacifier
- Luray attraction
- Stalagmite sites
- Stalactite locales
- Rock bottom locales?
- Spelunkers' spots
- Some areas in 'The Legend of Zelda'
- Carlsbad __ National Park
- Places for bats
- See tweeters, the pits?
- Neanderthal homes
- Ancient art venues
- Places for stalactites
- Beware entrance to such underground hollows
- Dark places to explore