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Dike Wall

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East Face 
North Face 

Dike Wall  

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Location: 37.59622, -119.01326 View Map  Incorrect?
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Administrators: Aron Quiter, John Robinson, Euan Cameron, AWinters, M.Morley, Adam Stackhouse, Salamanizer, Justin Johnsen, Kristine Hoffman (sitewide)
Submitted By: Tom Helvie on Jan 24, 2007
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Lake George with Mammoth Mountain in the distance,...


This awesome granite crag is located above the Twin lakes in Mammoth and features great summer cragging on quality rock with breathtaking views. A large snowbank can make climbing on the North face difficult until late in the season.

Getting There 

Take highway 203 to the stop light at the Village. Continue straight on Lake Mary Road. Follow this to the left turn at the Pokonobe Lodge. Take a right at the "T" and continue up to the Lake George parking area. Hike around the right side of the shore line to the opposite side of the lake. Then head up the hill on a climbers trail to the cliff.

Climbing Season

Weather station 4.5 miles from here

21 Total Routes

['4 Stars',0],['3 Stars',13],['2 Stars',8],['1 Star',0],['Bomb',0]

The Classics

Mountain Project's determination of some of the classic, most popular, highest rated routes for Dike Wall:
Mr. D.N.A.   5.8 5b 16 VI- 15 HVS 4c     Trad, 1 pitch, 50'   North Face
Cromagnon   5.10a 6a 18 VI+ 18 E1 5a     Sport, 1 pitch, 80'   East Face
Black Dihedral   5.10b 6a+ 19 VII- 19 E2 5b     Trad, 1 pitch, 70'   East Face
Double Ender   5.10c 6b 20 VII 20 E2 5b     Sport, 1 pitch, 60'   North Face
Black Lassie   5.10d 6b+ 21 VII+ 21 E3 5b     Sport, 1 pitch, 80'   East Face
Black Leather   5.11a 6c 22 VII+ 22 E3 5c     Sport, 1 pitch, 65'   North Face
Lesbie Friends   5.11b 6c 23 VIII- 23 E3 5c     Sport, 1 pitch, 70'   North Face
Antibro   5.11b 6c 23 VIII- 23 E3 5c     Sport, 1 pitch, 80'   East Face
Grinder   5.11c 6c+ 24 VIII- 24 E4 6a     Sport, 1 pitch, 80'   East Face
Going Both Ways   5.11c 6c+ 24 VIII- 24 E4 6a     Sport, 1 pitch, 60'   North Face
John Hartman's Proud Rock Climb   5.11d 7a 24 VIII 25 E5 6a PG13     Sport, 1 pitch, 80'   East Face
Secret Agent Man   5.12a 7a+ 25 VIII+ 25 E5 6a     Sport, 1 pitch, 80'   East Face
Strap-On Tools   5.12a 7a+ 25 VIII+ 25 E5 6a     Sport, 1 pitch, 60'   North Face
Browse More Classics in Dike Wall

Featured Route For Dike Wall
Nearing the top

Black Dihedral 5.10b 6a+ 19 VII- 19 E2 5b  CA : Sierra Eastside : ... : East Face
Varied climbing, with somewhat tricky gear placements, up the corner to a distinct crux at a small roof just below the anchors. You'll need to employ all of your climbing skills on this one to succeed. ...[more]   Browse More Classics in CA

Photos of Dike Wall Slideshow Add Photo
Nice clouds drifting high above Lake George, Mammo...
Nice clouds drifting high above Lake George, Mammo...
Lewis's Monkey Flower (Mimulus lewisii), Mammoth L...
Lewis's Monkey Flower (Mimulus lewisii), Mammoth L...
Dense-Flowered Spiraea (Spiraea densiflora), Mammo...
Dense-Flowered Spiraea (Spiraea densiflora), Mammo...

Comments on Dike Wall Add Comment
Show which comments
By GregH
From: San Diego, CA
Aug 30, 2012
Hey there,
Left my GriGri 2 up at the base of Black Leather (11a dihedral) on Aug 10th.

Went up there a few days later and not to be found. If you happened to pick it up I would love to get it back thanks!

By Jiorjio
Aug 8, 2014
I left a small rack up at Dike Wall last weekend Aug 3rd, if you found it please contact me. Happy to provide a reward/ransom if needed.
By kenr
Aug 10, 2014
The Dike Wall is located around GPS latitude longitude (N37.5962 W119.0133), about 0.2 mile / 350 meters SW from the S shore of Lake George, or about 4 miles / 6 km SW from the town of Mammoth Lakes.

Parking (lat long ~ N37.6034 W119.0107) is on the N side of Lake George. There are toilets and bear-proof food storage facilities.

Approach: The shorter approach hike is around the East side of Lake George -- about +350 vertical feet / +105 meters over a distance of 0.7 mile / 1.1 km, mostly on a good trail.

From the Lake George parking, start South past toilets on wide gentle trail on the left (East) side of the lake. Soon reach the side of the lake and continue roughly SE. After about 0.25 mile / 400 meters, cross a bridge over the outlet stream from the lake.

SW about 100 yards/meters reach the junction for the Barrett Lake trail, and bear Right to pass by that. SSW about 150 yards/meters just after passing over the inlet creek down from TJ Lake, see sign for trail to up to TJ Lake, and bear Right to pass by that. W along the south shore of Lake George about 110 yards/meters, the trail meets a steep rocky slope (GPS lat long ~ N37.5981 W119.0114).

Turn Left to leave the lake shore, and hike up SW steeply at first between two cabins. Then less steep continue up SW following good climbers track. After about 0.2 mile / 330 meters reach a slope of granite talus rocks. Scramble up this to reach the left side of the North face of the Dike Wall.
To reach the East face, scramble/hike up and left along base of cliffs.
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