as you can likely guess from its name, the crystal cave is quite the scenic spot -- it seems rather ominous from the outside, the mouth of the cave is dark and gaping, but once you get inside and go a ways, the darkness gives way to gleaming, glittering green crystals that line the walls and ceiling - even the stalactites and stalagmites are made of this same sparkling substance. eventually the cave splits into many different passageways, and it can be easy to get lost if you aren't careful. however if your breathing potion begins to run out, don't fret; if you go far enough, part of the caves breach above water, and there is air to breathe. if you look hard enough, you may be able to find a way out to the surface there. be wary, though, it's said that many sea monsters make their homes in this vast cave.