This is not exactly fun with rocks, but it is fun with ropes. We had some tree branches cut down in our yard tonight. It’s similar to rock climbing because you need ropes, special knots, a belayer, rappelling skills, snacks and you get to go way up high. It’s better than climbing because you get to take a gas burning chain saw up with you and cut off big branches. Which drop with a satisfying thump. Unless there’s someone below; in which case there is a horrifying thud. And then a scream.