1962 - Lincoln Lake Fire burned 700 acres near the junction of Lincoln Lake and Resthouse Meadow Trails unknown cause
1964 - Resthouse Meadow Fire burned 1076 acres including the Resthouse structure caused by humans
The damage we're seeing is probably from the 1962 fire. Unfortunately it's at such an altitude that trees have trouble regrowing. It's been long enough for the burn marks to mostly disappear though.
I finally got around to tweaking this. Cropped, Black & White, fiddled with the levels to get rid of the clouds in the background.