A mile or so and another 600 feet in elevation above Lower geiger Lake sits Upper Geiger Lake. To visit the lake itself you can take a short trail off 656 for about a half mile (the Wilderness map calls it trail # 48 but there’s no sign for it so I wonder why they bothered numbering it). There is a sign at the junction with an arrow pointing toward the lake. It’s well worth the short side trip.
Upper Geiger is smaller than the lower lake, but lots of folks get tired by the time they reach the lower one and so Upper Geiger receives far fewer visitors. You can tell by the signs of use on the trail. The gap that is visible in the cliffs and mountainside at the far end of the lake is Lost Buck Pass and the last three photos were taken from there.