South Sister, Prouty Glacier

Activity Notes

Join me for a climb of South Sister's Prouty Glacier. For this much less traveled route we gain the glacier from Green Lakes—where we will likely be camping on snow—and ascend through a couloir on the headwall and on to the summit. 

• A major factor will be the date that Cascade Lakes Highway opens up.
• Team selection will be made by May 15.
• This a couple of weeks before permits are required.