Alpine Climbing




We offer three alpine adventures for a range of ability levels:

  • Multi-day intro to mountaineering trip up the east side of Cloud Peak
  • Day trip of climbing up the stunning Thundercloud Arête at Lost Twin Lakes
  • Multi-day climbing trip up the classic Southeast Arête of Cloud Peak.

Intro to Mountaineering Trip: South Ridge of Cloud Peak

This 3-4 day trek climbs up the South Piney Creek Valley and traverses the imposing flanks of the Bighorns’ highest peak. Day 1 we’ll set out from Hunter Corrals, hiking through Soldier and Triangle Parks on our way to awe-inspiring Elk Lake.  Then we’ll head west to Cloud Peak Reservoir where we’ll set up camp.  Day 2 or 3 (depending on the weather) will be our summit day: we’ll scramble up past Mead, Diamond, and Sapphire Lakes, cross the snowfield at the base of Bomber Mountain, and then gain the South Ridge to the summit of Cloud Peak.  That night we’ll return to camp and refuel before hiking back out to Hunter Corrals the following day.

Intermediate Alpine Climbing: Thundercloud Arête, Lost Twin Lakes

Thundercloud Arête features six classic pitches of big holds, aesthetic movement, and stellar positioning beside the Yosemite-like walls of the Lost Twins.  We’ll start hiking from West Ten Sleep trailhead before daybreak, meandering through meadows as we work our way up to Lost Twin Lakes.   Then we’ll skirt the shores of the Lost Twin Lakes and scramble up a small scree field to the base of the arête.   The climbing starts out relaxed and gets progressively steeper as the arête narrows to a sharp point in the sky and a stunning summit platform.  We’ll walk off the backside of the cliff and work our way back down to the trailhead.

Advanced Alpine Climbing: Southeast Arête of Cloud Peak

Our advanced alpine climbing trip combines the extensive approach of our intro to mountaineering trip with a far more technical finish up the Southeast Arête of Cloud Peak’s fortress-like southern buttress.   Day 1 we’ll hike to Elk Lake, then move on to Cloud Peak Reservoir and set up camp.  Day 2 or 3 (weather dependent) we’ll scramble up the South Piney Creek Valley, climb up the Southeast Arête to the summit of Cloud Peak, then walk off the South Ridge and descend the valley back to camp.  The final day we’ll hike back out to the trailhead.

Additional information

Type of Trip

Intro to Mountaineering, Intro to Alpine Climbing, Intermediate Alpine Climbing


June 20-23, July 11-14, July 18-21, July 25-28, August 1-4, August 8-11, August 12-15, August 15-18, August 19-22, August 22-25, August 26-29, August 29-September 1

Party Type

Adult, Family

Size of Party

1, 2, 3, 4


– Leave No Trace and “Beyond Leave No Trace” practices
– Personal wellness, health, hygiene, and waste disposal in the outdoors
– Minimal-impact backpacking, camping, and climbing practices
– Principles of mountaineering and alpine climbing safety
– Different rope systems used in an alpine environment
– Anchor building, gear placement, extension and removal
– The area’s geology, ecology, archaeology, and mountaineering history


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