Okay, well I know for sure that it wasn't the south rim. It was along the eastern side, I know. Looking at Google Earth, there is a turn-out perfectly positioned to get this shot. I've updated the coordinates, but something strange happened. A whole bunch of other pictures that were at the south rim changed to now be at that same location. So, I'm wondering if I did have the correct coordinates, but that a bug in the system is moving other related image coordinates around. As I wrote, I'm pretty diligent about putting in coordinates, though sometimes I put in the coordinates of what's in the picture rather than where I was standing. Anyway, check out 42°55'38.82"N and 122° 3'21.70"W. That's pretty close to where I was standing for this shot.