Without the crutches of save points, wandering into deep caverns feels more and more like a gamble, as you're slowly getting weaker with each step, becoming drained of health and magic and curative items. (hardcoregaming101.net)
These small Chinese natives, which attract females by belting out quick chirps, dig deep caverns near ponds for shelter and raising tadpoles. (sciencemag.org)
While it looks like a volcanic atoll, it is actually a 430 foot deep cavern whose ceiling collapsed filling it in with sea water millions of years ago. (gonomad.com)