One of my first posts on this site was of a couple of highscalers belting off before going over the edge of the canyon. Here’s another one for your visual enjoyment! I’ll make a few comments below.
I don’t have the date this picture was taken, or any information about the photographer, but it was most likely a USBR photo. I can’t imagine who else would have gone over the canyon wall with these guys to get this shot. If you zoom in on this picture, you’ll see that they are using a drill of some kind to bore holes for anchors into the canyon wall. A square end plate was attached to the anchors (if that’s what these holes were for) to strengthen the sandstone wall and help keep it intact. These could have been something else, but that’s my best guess. They’ve already anchored several that look ready to be finished. Notice the 2 x 12 platforms – one below them and the other nearer the photographer. The photographer’s probably standing on that one.
This picture was taken from the Page side of Glen Canyon, looking downstream. Glen Canyon Dam is behind the photographer. A special thanks goes out to Dugan Warner for getting this picture to me.