FS · San Bernardino National Forest
Marion Mountain

Nothing here fits 42 ft of 16 sites
- Longest for your rig
- 20 ft
- Booking
- Reservable
- Hookups
- none
- Entry
- Back-in only
- ADA sites
- —
- Elevation
- 6,521 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
Every bookable site
No site here takes a 42 ft rig. The layout, for what it is worth.
Too short for 42 ft — 15 sites
00120 ft limit · back · gravel00220 ft limit · back · gravel00620 ft limit · back · gravel00720 ft limit · back · gravel00820 ft limit · back · gravel01020 ft limit · back · gravel01120 ft limit · back · gravel01220 ft limit · back · gravel01520 ft limit · back · gravel01720 ft limit · back · gravel01820 ft limit · back · gravel01920 ft limit · back · gravel02120 ft limit · back · gravel02220 ft limit · back · paved02420 ft limit · back · gravel
Tents only — no rig permitted here — 1 site
Within 60 miles
| Map marker# | Campground | Distance | Sites | Longest for your rig | Hookups |
|---|---|---|---|---|---|
| 1 | Fern Basin | 0 mi SW | 15 | 20 ft | none |
| 2 | Dark Canyon Campground | 1 mi N | 1 | — | none |
| 3 | Boulder Basin | 3 mi NW | 16 | 20 ft | none |
| 4 | Black Mountain (San Bernardino) | 3 mi N | 1 | — | none |
| 5 | Pinyon Flat Campground (San Bernardino National Forest) | 21 mi SE | 1 | — | none |
| 6 | Ribbonwood Equestrian CG | 22 mi SE | 8 | — | none · pull-through |
Everything else on record
- Bookable sites
- 16
- Non-site records excluded
- 11
- Max occupancy per site
- 8
- Reservable sites
- 16
- Coordinates
- 33.7917, -116.7319
- Nearest place
- Idyllwild
- Phone
- 909-382-2922
- Elevation
- 6,521 ft
Sources
- Recreation Information Database (RIDB) · fetched from
https://ridb.recreation.gov/api/v1/facilities/231973· 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