So maybe the OP simply meant, "How did Galen Rowell take this photo?". Just giving the benefit of the doubt, ya know?
By the way, in my long past youth while working at Denevi Camera store and, later, when I managed Palmers Camera in Berkeley, I had the honor of selling sh*tloads of film to Galen Rowell. I don't remember the film type (probably a chrome of some sort, maybe Koda-, maybe Ekta- .. I don't remember if Fuji had yet made headway into that domain) but he was a quite a nice guy and, don't forget in addition to being an excellent photographer, he was a damned good climber! I used to also see him in the Valley, in the 70s, when I'd hang-out with and sleepover with climber friends at I believe it was called "Camp 4". Bouldering madness!
Thats what I took it to mean. I was just pointing out that out to Sirius Glass who seemed to think otherwise.