Lost Basin Cutoff (FR 407) in ID -- Free Camping & Overnight Parking in Idaho

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Lost Basin Cutoff (FR 407) in ID

Boise NF, Cascade Ranger District
5,069 ft
Maps
Overnight camping allowedRUTTED
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A 31.0-mile stretch of dirt National Forest road in Valley County, ID.

Boise National Forest, Cascade Ranger District allows dispersed camping here -- 14-day limit in any 30 days.

All 31 miles in are maintained only for high-clearance vehicles. Dirt the whole way in (31 miles). Climbs 5,200 ft over 31 miles -- sustained grades near 12%, with pitches to 37%. Stretches run along a shelf with a drop of up to ~150 ft on the downhill side. Little level ground alongside -- few of the stretches measured have a flat spot to pull onto. Winds through 98 switchbacks. Dead-end road -- no mapped turnaround; expect to back out or unhitch.

The Horsethief Reservoir shoreline is 0.2 mi off. Private here -- the nearest through road is 1.6 miles off. Oro Mountain stands 2,673 ft above the site, 4.0 miles northeast. The nearest town, Cascade, is 6.9 mi off.

September normals 3671°F, 1.1″ rain. Monthly averages, PRISM 1991–2020.

Fire restrictions

Set by Boise National Forest, Cascade Ranger District. Stage 1 and 2 orders change within days -- check the current order before you build a fire.

fs.usda.gov
Sources checked August 2026Something wrong here?