When we were there last, we walked through Camp 4 (the climbers camp) to start a hike and we stopped to read the signs about the proper disposal of human waste for these climbers? Apparently it's all too common while climbing on El Capitan to reach you hand into a crevice and find a bag of crap! They are supposed to pack it all out with them, but apparently a lot of climbers just stash it where ever they can.
That's not El Capitan? Unless they are really low, it would be hard to get that much detail with a 200mm. It took our son, Lee, and his friend just 26 hours to get to the top of El Cap, so they didn't bring all that gear with them.