The place
A used double chair from Mammoth on the north ridge of Storm Peak, six miles up an old mining road from the town of Silverton. Every run is expert, most are a bootpack along the ridge from the chair's top, and none comes back to the chair: a bus picks you up on the road. It opened in January 2002.
Off-piste Guided terrain, avalanche-controlled in the season; past the boundary nothing is controlled or patrolled: avalanche terrain, your own risk.
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The lines
Every line here, with how hard it is.
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The Gnar Couloir
■■■■■Storm Peak's summit couloir, at the far end of the ridge hike from the chair past the Billboard (or a heli drop): a north-facing slot of about 1,400 ft at 45° and more between rock walls, with choke points and, depending on the snow, an air near the bottom.
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The Grande
■■■■■The wider of Storm Peak's two north couloirs, from the saddle on the summit's east ridge where the ridge hike ends, at about 12,850 ft, between Storm Peak and Velocity Peak: about 1,550 ft due north to the tarn.
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Hanging Valley
■■■■■The big bowl on the ridge between the Billboard and Storm Peak, where the hike turns east toward the summit: east down the bowl into Velocity Basin.
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Pope Face
■■■■■The Billboard's southernmost line, a 45-minute bootpack south along the ridge past the Rope Dee Dopes: a couloir entry, skied one at a time, then the long apron east to the Exit Road.
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Rope Dee Dope #1
■■■■■The first of four parallel chutes off the Billboard's east side, about half an hour's hike along the ridge from the chair: down to the shared apron, and the run-out east to the Exit Road.
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Ramp
■■■■■The Billboard ridge's line nearest the chair on the east side, off the crest where Sunset drops west: down the ramp, then a long run-out east to the Exit Road.
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Fat Guy
■■■■■A steep slot off the side of the Ramp, 130 m below the ridge, into the head of Nightmare's gully, and Nightmare down to the Exit Road.
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Hell's Gate
■■■■■A short, tight slot dropping north off a rib into the head of Nightmare, then Nightmare's gully down to the Exit Road.
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Mandatory Air
■■■■■Five minutes' walk south of the chair's top: off a cornice on the ridge, whose drop is hard to judge from above, onto the steep east face and down to the Exit Road.
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Two Smokes
■■■■■A straight, steep chute low on the east face, said to be one of the most intense runs on the mountain; the snow has a hard time sticking to its rock all season.
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Waterfall
■■■■■Straight off the chair's top with no hike: a thousand-foot east-facing bowl, then down to the Exit Road and the shuttle.
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Riff
■■■■■Just north of the chair's top, no hike: an open face that narrows to a choke, a powder apron below it, and out onto the Exit Road.
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Cabin
■■■■■A Silverton classic that holds its snow, and the guides' usual last run of the day: a wide meadow off the ridge north of the chair, a steep pitch, then a drainage gully to the Exit Road.
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Colorado
■■■■■The longest of the East Face's lines: a walk north along the ridge from the chair to the north knob, then north-north-east down to the foot of the Exit Road, a few hundred metres above Gladstone, where the bus picks you up.
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Splitski
■■■■■From the north knob down the North Face, north-north-west through the trees to the Ski to Base traverse above Cement Creek's road.
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Tiger #3 and Tiger Main
■■■■■One of five short chutes just west of the chair's top, straight off the unloading ramp, into Tiger Main, the West Face's main gully, and out to Cement Creek's road below the base.
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Corn Factory
■■■■■The trunk gully of the Billboard's west side, off the crest between the Rope Dee Dopes' tops: 1.7 km west-north-west down to Cement Creek's road, where the shuttle picks up.
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Billboard #4
■■■■■The Billboard's narrowest chute, beside the old microwave repeater on the ridge 700 ft above the chair, reached by two fixed-rope pitches: about 15 ft wide and 45°, with rocks in the middle of the slot, then tundra, a twisting pitch and Corn Factory's gully to the road.
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Billboard #5 and the Maze
■■■■■The farthest of the Billboard's chutes, past the fixed ropes on the ridge, into the Maze, the gully below it, and out to Cement Creek's road: 1.8 km from the ridge.


