Obsidian Flat Campground
Inyo National Forest, California
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As of September 2026, Obsidian Flat Campground is a campground in Inyo National Forest, California with 1 campsite. Obsidian Flat Campground is booked through Recreation.gov.
- PermitSnag checks Obsidian Flat Campground for availability and tells alert holders when a site opens up.
- Obsidian Flat Campground is located at 37.7333° N, 119.0167° W.
- people allowed on each site
- 50
Obsidian Flat Campground reservations and next available dates
September 2026
Next Available Dates
1 site open on Sep 30 at Obsidian Flat Campground. Book one now, or pick your dates above and get an alert when a site opens.
As of 30 September 2026, 13:27 UTC.
Campsites at Obsidian Flat Campground
- Group 1
What an RV fits
- 40 ft1 site
Amenities
- restrooms
At a glance: Setting: Mountain.
Things to do: fishing, hiking, biking, wildlife, photography, offroad.
All sites at Obsidian Flat Campground, as listed by Recreation.gov
Every site is in the OBSI loop.
| Site | Type | Sleeps | Max RV |
|---|---|---|---|
| 1 | Group | 50 | 40 ft |
About Obsidian Flat Campground
Overview
Obsidian Flat Group Campground, located just outside of Mammoth Lakes, California, provides an opportunity for a group to enjoy a secluded getaway in the eastern Sierra Nevada Mountains. With a peaceful forested setting and mountain views, the campground's location is perfect for relaxing and spending time in nature.
The area is popular for exploring the surrounding forest and geology, as well as nearby hiking, bicycling, fishing and off-road vehicle riding options.
Recreation
The eastern Sierras are known for their exceptional trout fishing. Campers can try their luck in Deadman Creek.
The majestic scenery and challenging trails are an obvious draw for hikers, mountain bikers and off-road vehicle enthusiasts. Deadman Creek Trail leads hikers into the spectacular Ansel Adams Wilderness.
Facilities
One group camping area can accommodate one group of up to 50 people, and up to five RVs (up to 40 feet in length) or 15 vehicles at a time. The site is fairly primitive and is equipped with a picnic table, vault toilet, campfire ring and bear-proof locker for food storage.
Natural Features
The campground is named after an obsidian lava flow nearby. It is situated in a pine forest at an elevation of 7,800 feet. Deadman Creek is adjacent to the facility, and several lakes are down the road.
Many species of wildlife call the mountains home, such as black bear, mountain lions, mule deer, pine marten, pika and numerous fish and birds.
Contact Info
Between 05/01/2025 and 09/30/2025 this location is staffed. Please call (760) 647-3044 to speak with local staff. From 10/01/2025 to 04/30/2026 this location is unstaffed. Please call (760) 647-3005 for general information.
Nearby Attractions
Hikers can access the scenic Ansel Adams Wilderness via nearby trails, and Yosemite National Park is a great day trip.
Ansel Adams Wilderness
Yosemite National Park
Rules and notices at Obsidian Flat Campground
Recreation.gov does not date these notices. We last read them on September 29, 2026. Check Obsidian Flat Campground on Recreation.gov
Notices from Recreation.gov
No drinking water available
This facility is locked by a security gate; combination included in confirmation letter
Contact Inyo National Forest regarding current snow levels and season opening and closing dates
This is a high elevation facility; please use caution when traveling from lower elevations; campground usually not clear of snow until late May or early June
Be bear aware; keep all food out of site in approved containers or locked inside your vehicle and remove all food from area after eating; always keep a clean camp and do not feed any wild animals
Click here for more information about Inyo National Forest
Don't Move Firewood: Protect California's forests from tree-killing pests by buying your firewood locally and burning it on-site. For more information visit firewood.ca.gov.
Obsidian Flat Campground FAQ
How hard is it to get a campsite at Obsidian Flat Campground?
Obsidian Flat Campground is rated "Hard to Book" based on historical demand. This campground is popular and often books out weeks in advance. Your best strategy is to monitor cancellations.
How do I find last-minute availability at Obsidian Flat Campground?
Cancellations happen frequently at Obsidian Flat Campground, especially 1-2 weeks before check-in dates. PermitSnag monitors availability 24/7 and sends instant alerts when sites open up due to cancellations. This is often the best way to snag popular campsites.
How many campsites does Obsidian Flat Campground have?
Obsidian Flat Campground has 1 campsites.
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