If it's the same location I'm thinking of, it's where Mirror Lake first comes into view on your left when descending the Main Trail from Trailside Meadow.
BruinDave
The very same spot.
Here is an image from Backpacker.com This is just of the MWMT. The trail here heads out of frame to the right along the granite bluffs before switchbacking down the northward face of the bluffs directly over Mirror Lake proper.
Once you bottom out near the shore, you cross the outlet of the lake before switchbacking down to Outpost Camp.
@jjoshuagregory (Instagram) for mainly landscape and mountain pics
