This film is one of your typical late 50's B-Movies. The premise is somewhat believable, but just not enough. The direction is somewhat decent, but I've seen other, better B-movies.

I found this in Wal-Mart on one of those Mill Creek compilation DVD's.

This could have made for quite a fun adventure, had the casting not been so terribly wooden! Four folks in a diving bell find them selves stranded in a network of caves. With now ay back to their colleagues on the surface, they must try to find a way out through the caverns - where they encounter their own equivalent of "Ben Gunn" (Maurice Bernard) who has already been down there for fourteen years. Meantime, topside, "Prof Wyman" (John Carradine) desperately tries to find a way to rescue them - but with the diving bell lost, can he find a way? There is a heck of a lot of back-projection and pa... read the rest.