These guys were gutsy! They’re getting ready to scale the canyon wall at the site of Glen Canyon Dam before there was a dam. They’re standing near the location of the present day Visitor’s Center. The “MM” in the background is a reference to Manson Mesa, the cite of the future town of Page. I like that one guy is wearing a straw hat. I’m guessing the guy in the hard hat did most of the climbing, if not all of it. This photo was dated 1955 and was part of a Word document someone sent me several years ago.