No one hurt
Thankfully, the rock tumbled down the cliff and didn’t hit anyone who was walking by. It was safe, for now. The group of people would have to answer for what they have done, defacing nature in a national park is no small offense. People get seriously penalized for that by park rangers.
David knew the rules all too well and that once the park ranger got a piece of this footage, they would be caught and made to answer for this. David left the area and headed back to where the park rangers were. He knew that once he showed them the video, they would go looking for the group.