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© 2026 Roaming.Camp · Data from NPS, Recreation.gov, BLM, USFS, NWS, and the FCC.Operating on ceded ancestral land.Photography via Unsplash.

Leave it better than you found it.

Astragalus chamaeleuce — Matt Lavin 004

Hike

Crater Ice Cave

Summits Big Pryor Mountain
Inside Custer National Forest
2,023 ft of climbing

3.6 mi out & back · 2,023 ft gain · 8,779 ft high point · Hard

In Custer National Forest · Montana · U.S. Forest Service

About Elevation Highlights Map Camp near here More hikes

About this hike

Crater Ice Cave is a 3.5 mile out and back to Big Pryor Mountain in Custer National Forest, climbing 2,023 feet to 8,779 feet.

Elevation

2,023 ft of gain round trip.

Camp near here

The closest places to sleep, measured from the trailhead.

See all on the map

5.7 mi from the trailhead
Sage Creek Cabin
Campground · Montana
5.8 mi from the trailhead

More hikes nearby

Ranked the same way, within twenty-five miles.

13 mi from you
Lower Layout Creek
- Ends at Bighorn Lake
- Inside Bighorn Canyon National Recreation Area
- Camp 2 mi away
0.5 mi loop · 75 ft gain · Easy
Bighorn Canyon National Recreation Area · Camp 2 mi away
17 mi from you

Out: 1,820 ft up, returns the same way. Source: USGS 3DEP.

Highlights

What the trail reaches, measured from the start.

Big Pryor MountainDestination · 1.8 mi in

Map

The route at the trailhead. Drag with two fingers, or hold a key to zoom.

Trail data: USFS, NPS, © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP via Mapzen terrain tiles. Nearby reading: Wikipedia. Photos: Wikimedia Commons contributors, licensed as shown on each photo. Download the trail and feature data.

At a glance

Length: 3.6 mi
Shape: Out & back
Gain: 2,023 ft round trip
High point: 8,779 ft
Low point: 7,102 ft
Difficulty: HardFrom 3.6 mi and 2,023 ft of climbing, with steep sections
Managed by: U.S. Forest Service
State: Montana
Camps within 15 mi: 6
Trailhead: 45.1701° N · 108.4531° W

Get directions Open the map

Sage Creek Campground

Campground

12.0 mi from the trailhead

Barry's Landing & Trail Creek Campground

Campground

Canyonmouth

Ends at Bighorn Lake
Inside Bighorn Canyon National Recreation Area
Camp under a mile away

1.8 mi loop · 241 ft gain · Easy

Bighorn Canyon National Recreation Area · Camp under a mile away

Horseshoe Campground Loop Trail

Ends at Bighorn Lake
Inside Bighorn Canyon National Recreation Area
Camp under a mile away

0.9 mi loop · 111 ft gain · Easy

Bighorn Canyon National Recreation Area · Camp under a mile away

Crooked Creek Bay trail

Ends at Bighorn Lake
Inside Bighorn Canyon National Recreation Area
Camp under a mile away

0.4 mi out & back · 97 ft gain · Easy

Bighorn Canyon National Recreation Area · Camp under a mile away

Big Pryor

Inside Custer National Forest
2,467 ft of climbing
Camp under a mile away

8.2 mi out & back · 2,467 ft gain · Hard

Custer National Forest · Camp under a mile away

South Pasture

Near Bighorn Lake
Inside Bighorn Canyon National Recreation Area
Camp under a mile away

6.6 mi out & back · 740 ft gain · Moderate

Bighorn Canyon National Recreation Area · Camp under a mile away

More like this

Hikes that read like this one, wherever they are.

Big Pryor
- Inside Custer National Forest
- 2,467 ft of climbing
- Camp under a mile away
8.2 mi out & back · 2,467 ft gain · Hard
Custer National Forest · Camp under a mile away
Cave Mountain
- Near Cave Mountain
- Inside Beaverhead National Forest
- Camp 3 mi away
2.5 mi out & back · 398 ft gain · Easy
Beaverhead National Forest · Camp 3 mi away
Castle Creek
- Inside Custer National Forest
- 3,827 ft of climbing
- Camp 2 mi away
11.8 mi out & back · 3,827 ft gain · Very hard
Custer National Forest · Camp 2 mi away
Stillwater Plateau
- Inside Custer National Forest
- 1,015 ft of climbing
- Camp 3 mi away
4.0 mi out & back · 1,015 ft gain · Moderate
Custer National Forest · Camp 3 mi away

Signal

Cell coverage here

T-MobileLTE · Fair

FCC coverage data · signal varies in remote terrain

Weather

7-day forecast

Today53°36°Partly Sunny
Mon45°38°Mostly Sunny
Tue44°35°Mostly Sunny
Wed46°38°Sunny
Thu50°41°Sunny
Fri48°38°Mostly Sunny
Sat47°39°Mostly Sunny

Today: Partly Sunny · wind 13 to 21 mph SW

National Weather Service · refreshed hourly