My buddy and I were hiking around in Sequoia National Park one summer. Me with a pad and a brush on a painters pole. My friend had a light rack in a backpack with some gear hanging off the back. After bouldering for the day we popped out onto the trail in front of a big group of tourists. One rather large guy asked loudly "What'd yall doing with that stuff?" After pondering for a minute I told him we were hired by the National Park Service to hike through the forrest and clean the moss off the trees, except on the north sides. That way if you get lost, you'll know which way north was. We continued on our way and overheard him say to the group, "That sounds like a lot of work."