Big Trinity Cabin sits at 7,900 feet in the Boise Mountains, a single rustic shelter near four alpine lakes with Trinity Mountain rising to 9,451 feet immediately south. The cabin has a wood stove, firewood, picnic table, and vault toilet but no water or electricity. Access requires high clearance and roughly 1.5 hours of slow, rocky driving from pavement.
Big Trinity Cabin is a seasonally-accessible backcountry cabin lodging in a high-alpine setting with limited services. Access is by vehicle with reasonable ground clearance when snow allows; the site is located among several subalpine lakes and forest.
Weather and SeasonsBest season: summer. Summer offers the clearest access and the fullest range of activities — once snow melts (often by early July) you get warm daytime hiking (highs around 60–75°F) and cool nights (30s–40s F) ideal for wood-stove evenings. Wildflower displays around the four alpine lakes, excellent trout fishing and small-boat/float-tube boating are at their peak, and trails are fully passable. Crowds are generally light to moderate (busier on summer holiday weekends), and the cabin’s amenities (firewood, stove, ou
Peak months: July, August, September, October
Avoid: November, December, January, February
Elevation7900 ft above sea level
Natural Features and SceneryThe cabin occupies a basin surrounded by lodgepole pines, with Big Roaring River Lake, Little Roaring River Lake, Big Trinity Lake, and Little Trinity Lake within reach. Trinity Mountain dominates the southern skyline. Summer brings wildflowers across alpine meadows, and elk, mule deer, and occasional black bears move through the clearings. Reviewers note clear mountain air, strong stargazing, and a quiet, isolated feel once you're above the smoke.
Lodging & AccommodationsThe cabin sleeps six and is furnished with one double bed and a sofa bed, side tables, a drop-down kitchen table, chairs and dining table, dishes and cookware, a fire extinguisher, and a wood stove. Bedding, lighting and emergency supplies are not provided; guests are responsible for cleaning before leaving.