There are many places to see prehistoric Indian rock art (petroglyphs) inside the park but we chose this trail because it's an easy trail (a friend needs an easy trail) and the entire trail is 1/2 mile round trip, plus this is where we can easily find petroglyphs.
It was only when we reached Mouse's tank that we bothered to ask someone where exactly we could see the rock art. He said they were scattered throughout the trail. He said to look carefully on the rocks. So on the walk back, we were on the look out solely for petroglyphs and we found them.