I had some friends managing the Sweetwater Ranch out of Hawthorne, NV, they took me out once and showed me a few petroglyphs. I'd never spot em, look like moss to me. smile I can go either way on bp trips. If leading, I have to keep looking back to see how far ahead I am. After hiking with some people, after a bit, you can tell when it's about time for them to stop briefly for a breather. In Alaska, the first full day out, I had to stop for 5-10 minutes at a time, those guys were so loaded with gear and camera stuff.
Duane