Featured amenities
Parking
Restrooms
About Obsidian Flat
Number of accommodations: 1
Seasonal information
2026 Season availability
Campground Amenities
Most popular amenities
Parking
Restrooms
Water and Hygiene
- Restrooms
Parking and Transport
- Parking
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1, Loop: OBSI
Site Details
Reviews (16)
What Guests Are Saying
Obsidian Flat is a great group campground, ideal for gatherings. It features vault toilets but lacks running and potable water. Visitors should bring their own toilet paper to ensure availability.
What Guests Are Saying
Obsidian Flat is a great group campground, ideal for gatherings. It features vault toilets but lacks running and potable water. Visitors should bring their own toilet paper to ensure availability.
Review Summary
Lee T
VerifiedJune 27, 2025 • Stayed at: 1, Loop: OBSI
This is a great group campground, although remember that it only has vault toilets, no running nor potable water.
You might want to bring some toilet paper in case they run out.
Lee T
VerifiedJune 27, 2025 • Stayed at: 1, Loop: OBSI
This is a great group campground, although remember that it only has vault toilets, no running nor potable water.
You might want to bring some toilet paper in case they run out.
Ines M
VerifiedAugust 5, 2023 • Stayed at: 1, Loop: OBSI
THE CAMPGROUND DOES NOT EXIST
IT IS A ROAD END WITH FALLEN TREES. Horrible
Ines M
VerifiedAugust 5, 2023 • Stayed at: 1, Loop: OBSI
THE CAMPGROUND DOES NOT EXIST
IT IS A ROAD END WITH FALLEN TREES. Horrible
Sharon C
VerifiedSeptember 6, 2022 • Stayed at: 1, Loop: OBSI
The location was great, however, getting out of the campsite- around the curve near the bathroom was a bit challenging with our 32 ft trailer.
Otherwise, we loved the location.
Sharon C
VerifiedSeptember 6, 2022 • Stayed at: 1, Loop: OBSI
The location was great, however, getting out of the campsite- around the curve near the bathroom was a bit challenging with our 32 ft trailer.
Otherwise, we loved the location.
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.
Location Obsidian Flat
Address:
Box 429
Lee Vining, CA, 93541
United States
Heading North
From U.S. Highway 395 and State Highway 203 (Mammoth Lakes Junction), travel 8.2 miles north on 395. Turn west onto Deadman Road and follow for 3.2 miles 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 miles south on 395 and turn right onto Deadman Road and follow for 3.2 miles 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.
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).
Latitude & Longitude: 37.7333 / -119.017
Elevation: 2397 feet
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: June 4, 2026
