4. Some have suggested that the keyhole is located at the lowest position in the saddle.  This is a telephoto view of the Longs Peak Keyhole from the summit of Estes Cone.  This photo clearly shows (at least to me) that the keyhole is not at the very bottom of the saddle.  If you're hiking the keyhole route, it is a feature that you must hike through on your way to the summit of Longs Peak, and can be seen left of the saddle in this photo.