Hey everybody, I've got a kinda random question. I'm writing a story, and the main character is out in the wilderness and has to purify water. She knows that boiling water will purify it, but she's been dropped in the middle of the wilderness with just the clothes on her back as part of a test of her wilderness knowledge. She doesn't have a container to boil water in and I'm having a hard time coming up with something that she'd be able to make with the materials available to her. It's late summer in an eastern/midwestern forest, and she's found a creek that leads into a small pond. She's broken off a sharp piece of stone to use for cutting, and used a bow drill to make a fire.
I've tentatively decided that she can make a bark container for rock boiling, but I'm not sure if there's something that would be easier/faster that someone with training would try first. Any suggestions, or am I on the right track?