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Big Trinity Cabin

FSU.S. Forest Service — MOUNTAIN HOME · Idaho · Boise National Forest

AgencyFSU.S. Forest Service
AreaBoise National Forest
LocationMOUNTAIN HOME · Idaho · Boise National Forest · 43.62889, -115.43694 · Map
Sites2 public sites counted from the federal listing — 2 cabin nonelectric
Getting a siteReservable — the federal listing marks this campground as taking reservations. Some sites or seasons may still be first-come; the listing’s own words are below.
HookupsElectric at 0 of 2 sites
Water hookups at 0 of 2 sites
Sewer hookups at 0 of 2 sites
Full hookups (all three at one site) at 0 of 2 sites
Counted site by site from affirmative reports in the federal record. A site with no report is not counted either way.
Max RV lengthNot reported in the federal data
Months openNot in federal data — the federal listing does not publish a season for this campground. Check the official description below or Recreation.gov.
FeesNot reported — the federal listing carries no fee description for this campground.
Check-in / outIn 2:00 PM · Out 1:00 PM (most common in the listing)
PetsAllowed at 2 sites, as reported
AccessibilityN
Phone208-587-7961

Check availability & book on Recreation.gov →

This site takes no reservations and shows no live availability. Source: Recreation.gov (RIDB export pulled November 5, 2026); this listing was last updated in the federal record on 2026-02-25.

From the official listing

Overview Big Trinity Cabin offers a quiet retreat in a beautiful high alpine landscape. The cabin is situated within a popular summer recreation area with many activities to enjoy.

The cabin has a limited season due to late snow melt, but is accessible by vehicles with reasonable ground clearance. Many creature comforts are provided; however, guests may want to bring some supplies and gear to make their experience more comfortable and enjoyable. Recreation The 4- mile Rainbow Basin Trail system for pedestrain travel only, offers access to several lakes, hikers can access the trail System from the trailhead located within Big Trinity Lake campground. Other trails within the area Roaring River trail 045, and Lava Mountain trail 125, these are motorized motorcycle trails. Click here for an Idaho OHV Safety Message.

Anglers can fish in any of the nearby lakes for rainbow and cutthroat trout. The lakes are also ideal for exploring by canoe or kayak. Facilities The cabin sleeps six and is equipped with one double bed, a sofa bed, side tables, a drop-down kitchen table, cleaning supplies, dishes and tableware, chairs and a dining table, cookware and a fire extinguisher. A wood stove is available for heating and cooking.

A picnic table and campfire ring with grill are provided outside. Drinking water is available from a nearby hand pump. The cabin is stocked with seasoned wood, a splitting maul, axe and hatchet. A vault restroom is located outside.

No electricity or propane is available. Guests must bring garbage bags to pack out their trash. Bedding, lighting and emergency supplies are not provided. Guests are responsible for cleaning the cabin before leaving.

Natural Features The cabin is located in a dense lodgepole pine forest close to the East Fork Roaring River at an elevation of 7,900 feet. It's nestled among four subalpine lakes: Big Roaring River Lake, Little Roaring River Lake, Big Trinity Lake and Little Trinity Lake. The peaks of the Boise Mountains surround the cabins, and Trinity Mountain, the tallest in the range at 9,451 feet, is just to the south.

Snow can make this area inaccessible until early July, but soon afterward, the land is blanketed by colorful summer wildflowers. This area is a haven for elk and deer, but wildlife watchers may also spot an occasional black bear. Nearby Attractions The summit of Trinity Mountain is the highest drivable point in Idaho, although the road may be blocked by snow until early July. A short, steep hike takes visitors to the lookout tower for panoramic views of several subalpine lakes and other mountains in the Boise Range.

Directions, from the listing

Travel east from Boise, Idaho on I-84 to Mountain Home. At I-84/Highway 20 junction, take Highway 20 east for 35 miles to Pine/Featherville turnoff. Travel north on Forest Highway 61 for 29 miles to Forest Road 172. Travel 15 miles northwest to Forest Road 129. Travel 3 miles to the Guard Station junction. The roadway is paved up to the junction of Forest Road 172. Forest Road 172 is native material (dirt) and trailer traffic is not recommended. There are signs noting each of the junctions.

Nearest federal campgrounds

FSU.S. Forest ServiceBig Roaring River Lake Campground
1 mi straight-line · Idaho
FSU.S. Forest ServiceElks Flat Campground
10 mi straight-line · MOUNTAIN HOME Idaho
FSU.S. Forest ServiceDog Creek (Id)
10 mi straight-line · MOUNTAIN HOME Idaho
FSU.S. Forest ServiceNinemeyer Campground
11 mi straight-line · Idaho
FSU.S. Forest ServicePine Campground Boat Ramp
13 mi straight-line · Idaho

Trip Card — Big Trinity Cabin

MOUNTAIN HOME · Idaho · Boise National Forest

AgencyFS · U.S. Forest Service
LocationMOUNTAIN HOME · Idaho · Boise National Forest
FeesNot reported in the federal data
Getting a siteReservable
HookupsNone reported
Max RVNot reported
Months openNot in federal data
Sites2 sites

Book: recreation.gov/camping/campgrounds/232309 · Source: Recreation.gov, pulled November 5, 2026. Facility details come from federal recreation data and may be out of date — this site takes no reservations and shows no live availability; confirm details and book through Recreation.gov or the managing agency.