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Routes in South Sister

North Ridge T 4th 1 2 I 2 M 1b
Old Crater Route T 3rd 1- 1 I 1 M 1a
Prouty Glacier T Easy Snow
South Side Route Easy Snow
Type: Trad, Snow, Alpine, 1000 ft, Grade II
FA: Gary Leech and Hubart North, July 17 1935
Page Views: 49 total · 39/month
Shared By: Allen Sanderson on Feb 9, 2018
Admins: Nate Ball, Micah Klesick

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When there is snow this route is a fun little jaunt. There are no real difficulties and with a bivy at Green Lake make for a nice outing.

Gain the Prouty Glacier from Green Lake. Head up the glacier to a rock band with a couloir. Climb though the rock band via the couloir. Once through the rock band continue up to gain the summit crater.

There may be a bergshrund below the rock band.


Approach from Cascade Lakes Highway and the Green Lake Trailhead to a bivy at Green Lake. From the northern end of basin turn up hill via a gully to gain the Prouty Glacier.


Crampons and and ice axe. Depending on conditions and a group's ability a rope and pickets for the bergshrund.


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