Take a journey underground with Nittany Grotto Inc., a group dedicated to preserving and exploring caves. Witness how they navigate tight passages, expansive domes, and muddy terrain, revealing the hidden beauty of the subterranean world.
4/26/19 | 4m 25s
7/19/19 | 58s
6/6/19 | 53s
2/18/22 | 1m 40s
2/5/26 | 1m 48s
8/15/20 | 3m 25s
6/25/21 | 2m 27s
8/6/21 | 3m 10s
