Featured amenities
Parking
Pet Friendly
Picnic Table
Restrooms
Fire Pit
About Obsidian Flat
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
Parking
Pet friendly
Picnic Table
Restrooms
Fire Pit
Water and Hygiene
- Restrooms
Cooking and Fire
- Picnic Table
- Fire Pit
Parking and Transport
- Parking
Pets and Policies
- Pet friendly
1, Loop: OBSI
- Gravel
- Driveway entry: Back-In
Site Details
Reviews (25)
What Guests Are Saying
Obsidian Flat is praised as a beautiful group campground in the Sierra, offering a great experience. However, it only has vault toilets and lacks running or potable water, so guests should bring their own toilet paper. Overall, it’s a lovely spot for group gatherings despite some basic limitations.
What Guests Are Saying
Obsidian Flat is praised as a beautiful group campground in the Sierra, offering a great experience. However, it only has vault toilets and lacks running or potable water, so guests should bring their own toilet paper. Overall, it’s a lovely spot for group gatherings despite some basic limitations.
Review Summary
Sharon C
VerifiedSeptember 1, 2022 • Stayed at: 1, Loop: OBSI
Very Peaceful and private campground.
Dirt road is not too difficult. I will definitely come back!! I hope this site stays open so we can return.
Sharon C
VerifiedSeptember 1, 2022 • Stayed at: 1, Loop: OBSI
Very Peaceful and private campground.
Dirt road is not too difficult. I will definitely come back!! I hope this site stays open so we can return.
Sharon C
VerifiedSeptember 1, 2022 • Stayed at: 1, Loop: OBSI
Very Peaceful and private campground.
Dirt road is not too difficult. I will definitely come back!! I hope this site stays open so we can return.
Roman D
VerifiedJuly 8, 2022 • Stayed at: 1, Loop: OBSI
Great site, lots of space, good toilets, I really like how the locked gate kept the side by sides from driving up to the camp.
Roman D
VerifiedJuly 8, 2022 • Stayed at: 1, Loop: OBSI
Great site, lots of space, good toilets, I really like how the locked gate kept the side by sides from driving up to the camp.
Roman D
VerifiedJuly 8, 2022 • Stayed at: 1, Loop: OBSI
Great site, lots of space, good toilets, I really like how the locked gate kept the side by sides from driving up to the camp.
Jane W
VerifiedNovember 15, 2021 • Stayed at: 1, Loop: OBSI
We never found the group camping site. Sign pointed to group camping site at a road needing 4 wheel drive and we only had a camper van. Highly recommend finding camp before dark. If I don't see the road sign for Dead man creek rd I would not have believed we were in the right place.
Jane W
VerifiedNovember 15, 2021 • Stayed at: 1, Loop: OBSI
We never found the group camping site. Sign pointed to group camping site at a road needing 4 wheel drive and we only had a camper van. Highly recommend finding camp before dark. If I don't see the road sign for Dead man creek rd I would not have believed we were in the right place.
Jane W
VerifiedNovember 15, 2021 • Stayed at: 1, Loop: OBSI
We never found the group camping site. Sign pointed to group camping site at a road needing 4 wheel drive and we only had a camper van. Highly recommend finding camp before dark. If I don't see the road sign for Dead man creek rd I would not have believed we were in the right place.
William D
VerifiedSeptember 6, 2021 • Stayed at: 1, Loop: OBSI
Great group site with 2 bear cabinets, bar height meal prep table, 4 picnic tables, and 2 toilets. Plenty of room at this site as it will easily hold 50 campers in tents. Little hard to find. When you pull off Deadman Creak Rd go straight don't take any left or right turns and there is a sign that says dead end and that's where you are going. Gate code comes in reservation confirmation. You're pretty isolated and some cell service works. Activities are exploring, hiking, and biking. Deadman Creak has trout but the weird creek right by the site disappears into the ground even with a good flow.
Location & Directions for Obsidian Flat
Box 429, Lee Vining, CA 93541 United States
Elevation: 2,397 ft
Getting There
<p>Heading North</p>
<p>From U.S. Highway 395 and State Highway 203 (Mammoth Lakes Junction), travel 8.2 mi north on 395. Turn west onto Deadman Road and follow for 3.2 mi to Upper Deadman Campground. Turn toward the Group Campground turnoff onto ...
Heading North
From U.S. Highway 395 and State Highway 203 (Mammoth Lakes Junction), travel 8.2 mi north on 395. Turn west onto Deadman Road and follow for 3.2 mi to Upper Deadman Campground. Turn toward the Group Campground turnoff onto FS Road 2S05F. Continue one mile to the campground on the right.
Heading South
From U.S. Highway 395 and State Highway 158 (June Lake Jucntion South) travel approximately 6.5 mi south on 395 and turn right onto Deadman Road and follow for 3.2 mi to Upper Deadman Campground. Turn toward the Group Campground turnoff onto FS Road 2S05F, across the road. Continue one mile to the campground on the right.
Highway access
Obsidian Flat is accessible via U.S. Highway 395, located approximately 8.2 miles south from the junction with State Highway 203 (Mammoth Lakes Junction) and about 6.5 miles north from the junction with State Highway 158 (June Lake Junction South).
Nearby National Park
South Entrance
Approximate driving time: over 1 hr (78 min)
Policies & Rules
Arrival & departure
- Access to the facility is secured with a combination lock provided in the confirmation letter.
Utilities
- Drinking water is not available at this facility.
Local regulations
- For current snow levels and seasonal dates, please contact Inyo National Forest.
Safety & rules
- Due to high elevation, caution is advised when traveling from lower elevations; expect snow until late May or early June.
Wildlife & food storage
- To prevent bear encounters, store food in approved containers or locked vehicles, keep a clean camp, and do not feed wildlife.
General
- Click here for more information about Inyo National Forest
Fires & fuel
- To protect forests, purchase firewood locally and do not move it; burn it on-site.
Nearby Campgrounds
Nearby destinations
Last updated: October 20, 2026
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Explore Lee Vining, CA
Population: 628
Elevation: 6,781 ft
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