Middle Blue Lake with late afternoon reflections, Blue Lakes, Sneffels Wilderness, Colorado.
As shadows crept up the western wall of the basin, the remaining warm light was reflected from the surface of the middle Blue Lake. Mt. Sneffels summit is the peak in the middle of the photo; Blue Lakes Pass is found on the ridgeline to the right. In between are 18 switchbacks up the wall!
Canon EOS 5D Mk II, 24mm f/2.8 lens