Jennifer is bobbing on the surface, poking around as she gets a feel for where the hot water is coming from. No shore in this cave, though there's a few small, rounded shelves of stone sticking out within the light of the glowstick, one nearby just barely big enough for one person(or two very friendly persons) to lie on.
The air is steamy, making for a surreal glow from the glowsticks, which fail to show many details, other than the ceiling being rather low and dotted with stalactites, with the odd pillar penetrating the water surface. "Hey Kiley, you sure took your time getting here. Where'd you think the heat is from?"
Big cave, but you'd need a stronger light, or swim out of sight of the entry tunnel to find the other side. There seems to be a rather steady current however, and the air is fresh enough despite the steam that there must be another surface opening somewhere..