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Mammoth Rock is a large limestone/marble formation visible from nearly anywhere in the town of Mammoth Lakes. The rock by in large is heavily fractured and chossy. There are a couple Class 2-3 routes up the southern side from the saddle separating the rock from the Sherwins.
From the town of Mammoth Lakes, follow Old Mammoth Road to the Mammoth Rock Trailhead. From there, many unmaintained trails lead up to the rock. Pick one and head up. Plan for 20-40 minutes to get to the rock, depending on snow conditions (if present) and acclimation.
2 Total Routes
Featured Route For Mammoth Rock
Justification Easy 5th 1+ 3 I M 1c Mod. Snow CA : Sierra Eastside : ... : Mammoth Rock
Justification starts up a short couloir that runs halfway up the northwest face before traversing onto the west shoulder to the summit.Start climbing the couloir up moderate snow past two chockstones to a small snowfield below a 20' of easy mixed climbing. The easy mixed will end in the largest snowfield and the end of the couloir. From here, traverse climber's right on an obvious ledge to a chimney. Climb the chimney until possible to traverse to climber's right again to easier terrain. Once ou...[more] Browse More Classics in CA
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