CNN Anderson Cooper 360 June 19, 2013 05:35:00
Underneath this rock and went straight out. >> reporter: jones traced the fire to a poorly built campfire ring. what was it about the formation of rocks that made you think something was fishy here. >> there's a large rock that had been propped up by another rock. it looks like this fire is staged to look like a campfire but it was an intentional fire. >> reporter: then jones took a closer look at the ashes and made an important find. >> it's a paper match and i can see clearly the head of it and clearly the stem. i wanted to get closer to it and then i noticed there is a second match directly...