This is a remarkable location for geology enthusiasts and people who like hiking. When we were here in December, it was quite deserted and quiet. Very relaxing and interesting. The drive can be a bit rough to get out on - it is all dirt roads and is pretty bumpy. The dome itself is quite large and there are many... More

Not much to look at, but convenient and interesting for wannabe geologists like us. Look for the sign a few miles north of Mammoth Lakes on SR-395. It’s less than a mile away on a good gravel road that takes you right to the base. A trail to your right (south) takes you around and up on top…but the views... More

Very pretty back at the domes. Worth the few miles off the road to check it out. Take a lunch and hike around More

Great geology here!! Lots of time lines, fairly recen,t that tie into the Owens Valley and Sierra Nevadas. More

Incredible history of how this volcanic glass is formed. More

It is the biggest pile of "black glass" I've ever seen. It was absolutely awsome. I always think of such things like minerals as this small piece of something. This obsidian done is literally a mountain of black glass. I think a lot of people don't visit this place as they don't know what Obsidian is. I sure didn't until... More

Obsidian Dome is a collapsed volcanic dome made up of giant (car-sized) obsidian boulders and smaller obsidian pieces. If what you want to see is lots of obsidian, this is a great place to look at. It is easily accessible off highway 395 on the Obsidian Dome road (near Deadman Summit, just north of Mammoth Lakes junction), which is a... More