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Fall Creek - Moose Lake

Pioneer Mountains

Sun Valley + Sawtooth Mountains, Idaho

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Fall Creek - Moose Lake

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  • A view from the trail to Point 10,620 towering above Moose Lake.- Fall Creek - Moose Lake
  • Moose Lake on an overcast afternoon.- Fall Creek - Moose Lake
  • Reflection of mist-shrouded peaks in the still waters of Moose Lake.- Fall Creek - Moose Lake
  • Reflection of mist-shrouded peaks in the still waters of Moose Lake.- Fall Creek - Moose Lake
  • An unnamed pond at 9,455 feet just above Moose Lake.- Fall Creek - Moose Lake
  • Lake 9,455 detail.- Fall Creek - Moose Lake
  • Exploring the landscape above Moose Lake.- Fall Creek - Moose Lake
  • A striking corner awaits an intrepid climber.- Fall Creek - Moose Lake
  • Potentail climbing up corners on the north face below Point 10,620.- Fall Creek - Moose Lake
  • The lower unnamed lake in the Moose Lake Cirque.- Fall Creek - Moose Lake
  • - Fall Creek - Moose Lake
Overview + Weather
Pros: 
Beautiful alpine cirque. Potential climbing. Mid-summer wildflower meadows.
Cons: 
No bridge over Fall Creek to acces the trail. Mosquitos. Can be crowded on weekends.
Region:
Sun Valley + Sawtooth Mountains, ID
Congestion: 
Moderate
Pets allowed: 
Yes
Net Elevation Gain: 
2,301.00 ft (701.34 m)
Parking Pass: 
Not Required
Preferable Season(s):
Summer, Fall
Suitable for:
Hiking, Horseback
Total Distance: 
9.80 mi (15.77 km)
Trail type: 
There-and-back
Trailhead Elevation: 
7,240.00 ft (2,206.75 m)
Current Local Weather:
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Hike Description

Hike Description

Contributor

Fall Creek Canyon Overview

Fall Creek Canyon is a tributary of the Wildhorse Creek Canyon complex that drains the north side of the 12,000-foot Pioneer Mountain Crest. Though Wildhorse itself is longer and bigger than Fall Creek, a four-wheel drive road climbs nearly to the head of that canyon. The Fall Creek headwaters, by contrast, can only be reached via a 7-mile trail, making it feel much more remote than the Wildhorse Cirque. 

The entire Wildhorse complex has experienced extensive mountain glaciation. The rivers of ice draining Wildhorse and Fall Creek merged together and extended down canyon to the mouth of the East Fork of the Big Lost River. At times the Wildhorse glacier dammed the East Fork, forming a massive glacial lake that backed all the way up to the Copper Basin glaciers.

The Fall Creek Canyon itself drains a series of stunning ridgelines above 11,000 feet. The huge U-shaped canyon captures several additional tributaries that climb into alpine meadows and cirques with beautiful sapphire Lakes.

Moose Lake

Moose Lake is situated in a beautiful high-alpine basin. The trail crosses the Wildhorse Detachment Fault, leaving the dark shale slopes behind and entering a cirque ringed with vertical granite walls. The meadows above Moose Lake host beautiful mid-summer wildflowers.   

The trail is accessed from the trail up Fall Creek Canyon. From the Moose Lake junction, cross the creek (note that high water in spring and early summer can make the first creek crossing quite dangerous.) and start climbing through several steep switchbacks trending down canyon. After crossing an avalanche path and several springs, the grade lessens a bit and enters a zone of granite boulders.

The trail turns west into the Right Fork drainage and hugs the south-facing talus until crossing the creek around 8,800 feet.  Hike through the woods and cross the creek that drains Lake 8,980. The final climb weaves up a blunt ridge on granite slabs and through sparse trees to a flat, green meadow just before the lake.

It is possible to climb into the upper meadows and loop over and down to Lake 8,980 on your way back to the car. The descent, however, is down a large, steep talus slope and requires good balance and stable footing.

Off-Trail Hiking

The north facing headwalls above Moose Lake are covered in expanses of talus and scree. Though footing can be difficult, competent off-trail scramblers should be able to the shoulder above Angel Lake and then descend to this isolated punchbowl high above the Fall Creek Canyon. Descending from here down Fall Creek will make a very adventurous off-trail loop out of your outing.

Technical Climbing

Climbers will be enticed by the sweeping corners of the northwest face of the granite buttress standing guard over the entrance to the basin (on the divide with the Left Fork). There are some impressive leaning corners and dihedrals that may yield some quality climbing.

Reference: All content excerpted from Exploring Sun Valley - A Comprehensive Guide to the Boulder, Pioneer, and Smoky Mountains by Idaho River Publications.

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Published in collaboration with Idaho River Publications

Our mission is to inspire adventure with beautiful, comprehensive and waterproof map-based guidebooks.  Owner, publisher, and photographer Matt Leidecker, grew up exploring and guiding on the rivers in central Idaho.  His award winning Middle Fork of the Salmon River – A Comprehensive Guide is the standard by which other river guidebooks are measured.  Printed on virtually indestructible YUPO paper, IRP guides are truly unique all-in-one resources for adventure.  Each book is loaded with full-color maps, stunning photographs, and information on the history, geology, and wildflowers.  Visit Idaho River Publications to explore our guidebooks to the Rogue River in Oregon and the mountains of Central Idaho.

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