This last weekend Kevin and I went to the Craters of the Moon National Monument to explore the caves. After two rejections and a realization that we should tell our roommates where we were in case we didn't come back (we left the third cave to text them) we finally were able to go far into a cave. It was really cool, literally, in the caves. There was ice at the base of the cave walls.
On the way out I noticed a spider web and thought "this is a weird place for a spider web". Weirder yet was that there are a dead bat in the spider's web. It was hanging from a rock near the cave floor so I think the spider bit it while it was asleep. I think it made it worthwhile.