Considering the Mountainback at Mammoth in Mammoth Lakes?
A VT member wrote the following comment about visiting Mammoth Lakes:
Duck Lake by mtncorg
You can reach Duck Lake by walking up the Mammoth Creek trail from the trailhead near Lake Mary and passing over the 10600 foot Duck Pass, going by several pretty lakes en route - Arrowhead, Skelton, Red and Barney - or you can coninue on the Mammoth Crest trail past the Deer Lakes and up a bootpath to connect with the Mammoth Creek trail at Duck Pass.
From Duck Pass, the Mammoth Crest trail descends to the lake and crosses its outlet on the southern shore, connecting shortly with the John Muir trail which is coming up from Reds Meadows and the Devil's Postpile. The trail continues to Purple Lake and Lake Virginia, ending at Mt Whitney, many miles and weeks away.