Kiley quickly concludes this is a science thing, probably tinker science. Were she not alone, she'd announce that out loud and nod sagely. But because she is, and because she has no idea what this thing even is or does besides being really hot, she says nothing, doesn't nod and most of all doesn't touch it or mess with it in any way. If it's heating a pool, that's just swell in her book.
So she turns around and swims back to the heated pool to look for the source of fresh air, instead. If there's a passage big enough for a person, maybe she can make a note of this place as somewhere to go for free time. Beats going to the beach this time of year.