BostonGlacier

X/C Zone

ForbiddenX/C Zone

Boston BasinX/C Zone

Torment Basin

X/C Zone

Sahale Glacier Camp

(food canister required)

Upper Bivy Area6200ft / 1890m

Lower Bivy Area5640ft / 1720m

Not intended for navigational purposes

rev 05/13 ssb

InspirationX/C Zone 6

12

12

12

12

Cross-Country Zone

Boundary

Area of canister

requirement

Climbers’ Route(rough estimate)

12Maximum Group

Size per Zone

CompostingToilet

Lower: 10U 643002E 5373099NUpper: 10U 643030E 5373820N

(NAD83)

National Park ServiceU.S. Department of the Interior

North Cascades National Park

Boston Basin and Surrounding Area