Glacier Lily - Erythronium grandiflorum
Seen on the trail to Noble Knob, on the side of Mutton Mountain. The similiar Avalanche Lily (E. montanum) is white with a yellow center. Both appear soon after snow melt, but are not specifically associated with avalanches or glaciers.
Most of these had wilted by the time we hiked the trail, but a few were still blooming nicely.