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Obsidian Dome

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Address: Deadman Summit, June Lake Loop, Mammoth Lakes, CA

Location is in Mono County near June lakes, this natural dome was created...

Location is in Mono County near June lakes, this natural dome was created out of lava which solidified to black glass, hence the name, obsidian.

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TripAdvisor Reviewer Highlights

Read all 74 reviews
Visitor rating
  • 33
  • 28
    Very good
  • 9
  • 0
  • 0
Very interesting

This is the most interesting place I have been in a while. My daughter and husband walked to the top and got some great pictures of the dome area and the surrounding peaks. If you... read more

5 of 5 bubblesReviewed 1 week ago
Phyllis V
Winnemucca, Nevada
via mobile
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74 Reviews from our TripAdvisor Community

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Showing 70: English reviews
Winnemucca, Nevada
Level Contributor
113 reviews
27 attraction reviews
common_n_attraction_reviews_1bd8 72 helpful votes
5 of 5 bubbles Reviewed 1 week ago via mobile

This is the most interesting place I have been in a while. My daughter and husband walked to the top and got some great pictures of the dome area and the surrounding peaks. If you look hard enough you can even find the main hole of the explosion. It's awesome how there are trees growing in this desolate place.

Thank Phyllis V
Albion, California
Level Contributor
21 reviews
6 attraction reviews
4 of 5 bubbles Reviewed 1 week ago

If you're interested in rocks or you like to hike, this is a beautiful little side trip. You can either drive on the not-so-great road while admiring the sun dancing on the obsidian cliff face, or you can park and hike to the top to enjoy a spectacular view.

Thank Catherine K
Coto de Caza, California
Level Contributor
208 reviews
87 attraction reviews
common_n_attraction_reviews_1bd8 50 helpful votes
3 of 5 bubbles Reviewed 2 weeks ago via mobile

Amazing lava flows from the main volcano vent. Very tall and probably the tallest I've ever seen. Lots of low grade obsidian in huge boulders. Incredible sight to see. I was hoping to find some snow-flake obsidian or pure black onyx dense quality grade billets. May need to spend a few days here next spring and hike the entire dome... More 

Thank Eric B
Redondo Beach, California
Level Contributor
225 reviews
112 attraction reviews
common_n_attraction_reviews_1bd8 98 helpful votes
5 of 5 bubbles Reviewed 3 weeks ago

We went close to sunset and it was a fantastic time to observe the obsidian. The road down is difficult and only recommended for 4-wheel/all-wheel drive. The loop around take about 45 minutes.

Thank Janice N
Melbourne Beach, Florida
Level Contributor
91 reviews
21 attraction reviews
common_n_attraction_reviews_1bd8 20 helpful votes
4 of 5 bubbles Reviewed 3 weeks ago

There are several ways to get here, ist thru Lava Beds National monument - it is a 15 mile dirt road, my husband wasn't thrilled with more dirt roads so we continued down past the visitor center in Lava Beds on route 10 then turned west at Tionesta intersection and continued west - there are two dirt roads leading up... More 

Thank Kaylee4848
Camarillo, California
Level Contributor
26 reviews
7 attraction reviews
common_n_attraction_reviews_1bd8 7 helpful votes
4 of 5 bubbles Reviewed September 15, 2016

If you enjoy learning new things, then visit. It is fascinating how this came to be. That being said, be careful. The rocks are razor sharp and nothing preventing your kiddos from climbing up them- except responsible parenting. One slip or misstep and it will be an emergency!

Thank Richsgirl711
Menlo Park, California
Level Contributor
214 reviews
55 attraction reviews
common_n_attraction_reviews_1bd8 116 helpful votes
4 of 5 bubbles Reviewed September 14, 2016

I've been here several times and always enjoy Obsidian Dome. It's a short drive down a very good dirt road right off of US 395, on the way to Mammoth Lakes from June Lake or Mono Lake. You can scramble up the dome, or drive a little farther down and walk up an old road (apparently from a pumice mine)... More 

Thank JerryR10
San Luis Obispo, California
Level Contributor
28 reviews
14 attraction reviews
5 of 5 bubbles Reviewed September 11, 2016

We had been to Obsidian Dome several times but never went up to the top. The trail is well maintained and a vert walk. Once on the top, endless piles of boulders and rocks, weird magma flow patterns...an other world. Because of the nature of the rocks and being glass like based, walking on the smaller chunks sounds like walking... More 

Thank _dontbuycheapshoes
Vero Beach, Florida
Level Contributor
106 reviews
10 attraction reviews
common_n_attraction_reviews_1bd8 43 helpful votes
5 of 5 bubbles Reviewed September 1, 2016

We visited Obsidian Dome based on the reviews on this site. I am so glad we did. It was a little hard to find. The road is very ruff and not well marked. When you get to the top of the dome, it appears like a different planet.

Thank Georden7 W
Level Contributor
29 reviews
18 attraction reviews
common_n_attraction_reviews_1bd8 5 helpful votes
4 of 5 bubbles Reviewed August 28, 2016 via mobile

The dome is definitely a different place. Make sure to bring some water with you 'coz on the top of the dome it is very hot and there is no water around.

Thank Emilly D

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Torrance, California
over a year ago

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  • How do I get there using public transportation?
  • Is there a restaurant or café onsite?