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Boulder Island

Boulder Island  


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Location: 43.7991, -110.7276 View Map  Incorrect?
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Administrators: Mike Snyder, Kristine Hoffman (sitewide)
Submitted By: Fink on Sep 17, 2009
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Description 

One of the best ways to spend a lazy afternoon climbing in Jackson, swim or paddle out to the island and enjoy some scenic toproping.

Scramble on top of the main boulder from the east side and set up your climbs off of several bolts on the west and northwest sides. There are a few cracks on top of the boulder that would be possible (with some creativity) to rig anchors from. Many excellent climbs from around 10- to 11+ are possible.

Note: As of Sep 2009, the pair of bolts off the northwest side were 1/4 inchers & rusted. Other set was solid

Getting There 

From the Leigh Lake parking area, follow the trail north towards Leigh Lake. After approximately 3/4 of a mile, follow signs toward the Leigh Lake Portage. From the shore of the lake, swim to the island approximately 50 yards away. The island is also quite clearly marked on the USGS topo.

Alternatively, launch a canoe/sea kayak from the same trailhead and paddle north on String Lake until you are forced to portage your boat ~200 yards to Leigh Lake. Paddle across to the same island...but why would you bother with that? Just carry a pool toy if you can't swim.

Climbing Season



Weather station 9.2 miles from here


Local Information for Boulder Island
Photos of Boulder Island Slideshow Add Photo
Firing up the crack on the west side.
Firing up the crack on the west side.

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By Gee Double
Jun 13, 2014
Boulder Island: Routes- right to left on Steep S-NW side: Top ropes!

V5: steep boulder problem, pads or top rope, brush or broom for lip, jugs to small hanging corner to lip maneuver. 4.5 m
5.10: (5.11- SDS); common free solo; very steep, big holds, lip crux, classic.
5.13- Collins: Hanging Arete, undercling, long move left, small crimps, 1 bolt + small tree anchor. Slings.
5.12+ Kehough: flexi flake, small holds prow, classic. Finish in 5.11 crack flare or dike. directional from "Balck Dike"
5.11 Crack: distinct crux at 6m. finish in flare right or black dike.
5.10d Black Dike: Classic crimps up dark colored dike. "Best 5.10 in the Tetons", bolt anchor
5.12- Arete: Classic prow on white stone, squat, then crimps, bolt anchor.
5.11+:start arete or flexflake, hidden crimp at 3/4 height, not as classic as Arete'...