You hadn't realized how thirsty you'd become hiking through the woods, and the stream looks pure and inviting. Kneeling by the stream, you scoop some water up in your hands and take a careful sip. The water tastes sweet and clean. A chill follows the water down your throat. You drink some more of the water and then bend over, intending to soak your hair.
You glance at the surface of water just before hitting it and...