He wasn’t sure how many there were before he got to the dock, but at least two heavy thunks sounded off of the water while he started the engine. About 500 yards away and a few minutes distance from where he was, someone was throwing heavy slabs of stone over a cliff and into the reservoir below. Hansen raced for the opposite shoreline.
When he pulled in, a kid was about to toss another rock but paused. On the surface of the dusty red sandstone that he was holding were two toe imprints from a partial dinosaur track.