FS · San Bernardino National Forest

Boulder Basin

Nothing here fits 38 ft of 16 sites

Longest for your rig: 20 ft
Booking: Reservable
Hookups: water
Entry: Back-in only
ADA sites: —
Elevation: 7,534 ft
Vehicles: 1 per site

Every site here is listed for one vehicle. Agencies differ on whether a truck and the trailer it tows count as one or two, so this may not affect a fifth wheel — but it does decide whether a second car can come. Worth a call before you rely on it.

Book on Recreation.gov →the official reservation system; we take no cut

Getting there

What the agency says about the road in. For a long rig this is often the binding constraint — a site that fits is no use behind four miles of shelf road — and none of it appears in the campsite data.

Rigs not recommended on this roadBlack Mountain Road is an unpaved forest road, not recommended for low clearance vehicles or trailers.quoted from the driving directions
High clearance or 4WD advisedA four-wheel drive (4WD) vehicle is recommended with a minimum ground clearance of 6 inches.quoted from the description

Every bookable site

No site here takes a 38 ft rig. The layout, for what it is worth.

Too short for 38 ft — 7 sites

00520 ft limit · back · gravel 00920 ft limit · back · gravel 01320 ft limit · back · gravel 01520 ft limit · back · gravel 02220 ft limit · back · gravel 02720 ft limit · back · gravel 02920 ft limit · back · gravel

Tents only — no rig permitted here — 8 sites

008no rigs permitted · gravel 017no rigs permitted · gravel 023no rigs permitted · gravel 025no rigs permitted · gravel 026no rigs permitted · gravel 028no rigs permitted · gravel 030no rigs permitted · gravel 032no rigs permitted · gravel

Length never published — 1 site

003no length given · gravel

fits 38 ft (0) too short (15) not published (1)Click a site for what it publishes and a way to book it. Positions are the agency’s; roads, water and terrain are not shown, so this says where the sites are and not how you drive between them.

Within 60 miles

Map marker#	Campground	Distance	Sites	Longest for your rig	Hookups
1	Black Mountain (San Bernardino) CA · group	1 mi NE	1	—	none
2	Dark Canyon Campground CA	2 mi SE	1	—	none
3	Marion Mountain CA	3 mi SE	16	20 ft	none
4	Fern Basin CA	3 mi S	15	20 ft	none
5	Coon Creek Group Campground CA · group	22 mi N	1	—	none
6	Skyline CA · group	23 mi N	1	30 ft	none · pull-through

this campground numbered to match the tableClick a marker for what it is and how far. Straight-line distances, not driving distances; the inset shows where this sits in the state. For directions, open this location in OpenStreetMap.

Everything else on record

Bookable sites: 16
Non-site records excluded: 21
Max occupancy per site: 8
Reservable sites: 16
Coordinates: 33.8264, -116.7539
Nearest place: Idyllwild
Phone: 909-382-2922
Elevation: 7,534 ft

Sources

Recreation Information Database (RIDB) · fetched from https://ridb.recreation.gov/api/v1/facilities/232022 · retrieved 2026-08-11 · public-domain
USGS Elevation Point Query Service · fetched from https://epqs.nationalmap.gov/v1/json · retrieved 2026-08-11 · public-domain