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OBSIDIAN DOME

Located near Deadman Summit, a few miles south of June Lake Loop along Hwy. 395, Obsidian Dome is a mile-long mound of black glass, reaching up to 300 feet high. From the parking lot at Obsidian Dome, you can climb up the mound and see the different composition of the obsidian, which is not uniformly black. As you explore the area, keep in mind that the rock can be quite sharp; this is the same material used by the Paiute Indians to sculpt arrowheads, spearheads and knives, their main trade items in times past.

The eruptions that formed each of these lava domes 550-600 years ago began with an explosive phase, then exuded slow-moving, sticky lava which oozed to the surface and cooled too quickly to allow crystal formation. Wilson Butte is located along Hwy. 395 just north of Obsidian Dome, and Devils Punchbowl is east of Hwy. 395 just below the June Lake junction.

Wilson Butte is the prominent dome as you rdive the highway. Obsidian Dome is the flatter one just beyond.


FOR MORE INFORMATION
Mammoth Ranger Station and Visitors Center
Highway 203, PO Box 148 Mammoth Lakes, CA 93546
760-924-5500

CITY CONCIERGE, MAMMOTH LAKES

Resort Reservations
Guest Services and Information
Mammoth Lakes, CA  93546
866-864-6444

City Concierge is the epicenter of centralized lodging reservations, rentals, guest services and information for Mammoth Lakes. We have the most comprehensive list of activities and guides for vacationers and second homeowners. There's Snowplace like Mammoth!


Bishop
Shulman Grove Visitors Center
798 N Main Street
Bishop, CA 93514
760-873-2500

June Lake
June Mountain Ski Resort
June Lake Loop
June Lake, CA 93529
760-648-7733

Lee Vining
Mono Basic Ranger Station & Visitor Center
PO Box 429
Lee Vining, CA 93541
760-647-3044

Lone Pine
Eastern Sierra Interagency Visitor center
Highway 395 & SR 136
Lone Pine, CA 93545
760-876-6222

Mt. Whitney Ranger Station
640.S. Main Street
Lone Pine, CA 93545
760-876-6200

Mammoth Lakes
Mammoth Mountain Ski Area
1 Minaret Road
Mammoth Lakes, CA 93546
760-934-2571

Mammoth Lakes Tourism
2520 Main Street
Mammoth Lakes, CA 93546
760-924-5500

Town Of Mammoth Lakes
437 Old Mammoth Road
Mammoth Lakes, CA 93546
760-934-8989

California Welcome Center, Mammoth Lakes
2510 Hwy 203
Mammoth Lakes, CA 93546
760-924-5500

White Mountain Ranger Station
798 North Main Street
Mammoth Lakes, CA 93546
760-876-2500

MLTPA - Mammoth Lake Trails & Public Access
PO Box 100 PMB 432
Mammoth Lakes, CA 93546
760-934-3154

Mammoth Welcome Center
Mammoth Lakes, CA 93546
70-924-5500




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