Obsidian Flat

Inyo National Forest

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Obsidian Flat Group Campground is a secluded spot located outside of Mammoth Lakes, California where up to 50 people can enjoy the peace and scenery of the eastern Sierra Nevada Mountains. It offers nearby opportunities to explore the forest and geology, hike, bike, fish and ride off-road vehicles, as well as access to the stunning Ansel Adams Wilderness and Yosemite National Park.


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.


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.


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.

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
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Campground Matrix

Set alerts at more campgrounds to increase your odds of getting a place to stay! Below is a list of the closest campgrounds supported on Campflare. Or, view all campgrounds in Inyo National Forest.

Nearby Campgrounds Distance Notification Rate
Reversed Creek
Inyo National Forest
4.5mi 90%
June Lake
Inyo National Forest
4.7mi 89%
Agnew Meadows Group Camp
Inyo National Forest
5.3mi 86%
Agnew Horse Camp
Inyo National Forest
5.3mi 86%
Oh Ridge
Inyo National Forest
5.5mi 93%
Old Shady Rest
Inyo National Forest
6.5mi 86%
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