I was backpacking in Yellowstone above the tree line at about 10,500 feet. We are hiking on a ridge above a lake when all the sudden we come across a horse skull. No body just the skull, pretty cool looking. We get to our campsite not to far away from the lake near where we found the horse skull. When we get climb down to the lake we find the body of the horse rotting on the edge of the lake with with negative film strips floating in the water and laying around the shore near the body.