Hole in the Ground, California
Hole-in-the-Ground Campground NFS 
Lassen National Forest
dirt road access #28N06, off Hwy 172 @ Mill Creek, CA
South of Highway 36, near jct Hwy 89
• Elevation: 4,300′
• Number of Sites: 13
• Vehicle Accessibility: No trailers
• Campsite Fee: Yes
• Campsite Reservation: No
• Campsite Water: hand-pump well
• Toilet: vault
• Length of Stay: 14 Days
• Season: April – October
• Trailheads: Mill Creek Trail
Shady pines campground situated near the wild and raging Mill Creek, on the south side of Mount Lassen. Outside of the Lassen National Park, this NFS camp offers a real backwoods feel and more seclusion. Easy foot access to Mill Creek and also the Ishi Wilderness.
Picnic tables and metal campfire rings provided at these campsites. Summers can be busy, but mid week you may have the whole place to yourself. NOTE: 3 miles dirt road access Lassen Forest Road #28N06. Trailers and large RVs are not recommended on this dirt road.
nearby towns –
NFS web link USDA
yet another?
Hole in the Ground, is also the name of a remote wilderness canyon deep in the Sierra Nevada mountains. Located on the Upper Kern River – in Grasshopper Flat near Hockett Peak (8551′ elev). All inside the Golden Trout Wilderness; accessible only by horseback or hiking trail. Find it on foot @ Jerky Trailhead on National Forest Road# 22S82
Hole in the Wall, California
Similarly named, Hole in the Wall Campground is a popular spot in the Mojave National Preserve. Group facilities, horse corrals, developed campgrounds, centrally located, yet close to Interstate 40.
Stop by the “Hole in the Wall” Information Center (760) 252-6104, for more info and maps. The most popular hike, the Ring Trail, will leads thru rock face (above) to the campground on Black Canyon Road, on the other side of this huge rock wall.
Mid Hills Campground (nearby) has better choice on secluded camping, but rougher road to access. Mojave desert has abundant camping, so there is plenty space for everyone!
