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Obsidian Dome

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

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

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  • 29
    Excellent
  • 22
    Very good
  • 7
    Average
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Very unique

Spend a few hours checking out this geological site and you won't regret it. No entrance fee. Just follow the signs to the dome. A bit of a bumpy road to get here, so watch out if... read more

5 of 5 starsReviewed 2 weeks ago
supapfunk
,
Champaign-Urbana, Illinois
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58 Reviews from our TripAdvisor Community

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Champaign-Urbana, Illinois
Level Contributor
8 reviews
3 attraction reviews
common_n_attraction_reviews_1bd8 1 helpful vote
5 of 5 stars Reviewed 2 weeks ago

Spend a few hours checking out this geological site and you won't regret it. No entrance fee. Just follow the signs to the dome. A bit of a bumpy road to get here, so watch out if you have a rental car. Hike up a short but steep path and you can walk around on the top of the dome.... More 

Helpful?
Thank supapfunk
Carlsbad, California
Level Contributor
25 reviews
8 attraction reviews
4 of 5 stars Reviewed 2 weeks ago

Fantastic example of Obsidian rock. Easy drive to it and you can park within a few feet of thousands of Obsidian rock of all sizes.

Helpful?
Thank LaCostaKeith
Kingsbridge, United Kingdom
Level Contributor
23 reviews
10 attraction reviews
common_n_attraction_reviews_1bd8 8 helpful votes
4 of 5 stars Reviewed 3 weeks ago

An interesting diversion for about 30 minutes or so if travelling south from Mono Lake towards Bishop, CA. Access is up a dirt road for about 2 miles into the forest. An interesting site to view the Obsidian (Volcanic Glass like rock) at this geological site.

Helpful?
Thank Hugh C
Level Contributor
12 reviews
7 attraction reviews
common_n_attraction_reviews_1bd8 2 helpful votes
4 of 5 stars Reviewed November 19, 2015

This area of the Obsidian Dome is quite a ways off the road but is worth the drive at least once in a lifetime. Another amazing natural sight and site.

Helpful?
Thank Kathy B
London
Level Contributor
51 reviews
44 attraction reviews
common_n_attraction_reviews_1bd8 124 helpful votes
5 of 5 stars Reviewed October 1, 2015

Obsidian Dome is a mile-long 300 foot high lava dome formed less than half a million years ago when magma cooled rapidly' Essentially it is a big pile of shiny black volcanic glass. It is located about 8 miles north of Mammoth Lakes, just south of June Lake, off Highway 395 — via a 2.7 mile dirt road to a... More 

Helpful?
3 Thank Tessaanddennis
Level Contributor
242 reviews
87 attraction reviews
common_n_attraction_reviews_1bd8 115 helpful votes
5 of 5 stars Reviewed September 29, 2015

Obsidian Dome (OD) has an obsidian flow on its flanks. OD is on forest service land and requires a minimum of a 2 mile forest service (dirt) road to negotiate to the first viewing of the obsidian on the west flank of the dome. By following the road about another mile farther, one can find an old bulldozer trail up... More 

Helpful?
1 Thank klkks
Fresno, California
Level Contributor
12 reviews
common_n_attraction_reviews_1bd8 3 helpful votes
5 of 5 stars Reviewed September 2, 2015

Very cool spot. A little off the main road (395) but easily accessible to any vehicle. If you have a 4x4 you can drive around the entire dome. A pretty amazing place that is surprisingly unknown.

Helpful?
2 Thank Groucho_Bear
Las Vegas
Level Contributor
13 reviews
3 attraction reviews
common_n_attraction_reviews_1bd8 9 helpful votes
4 of 5 stars Reviewed August 23, 2015

You have to be a bit of a rock hound of really into volcanoes to care about this big mound of rock bursting with obsidian. We got a big kick out of it.

Helpful?
Thank lovetoplan57
Edgewater, Maryland
Level Contributor
69 reviews
40 attraction reviews
common_n_attraction_reviews_1bd8 49 helpful votes
5 of 5 stars Reviewed August 3, 2015

Being an elementary school teacher, I could not pass up this side trip...and it was actually very easy...we rented a little compact car and had no trouble on the road...just go slow! To see this mountain of Obsidian was quite astounding! Don't miss it if your near...it is just 10 minutes or so off the main road.

Helpful?
2 Thank AnnieJ52
Pebble Beach, California
Level Contributor
89 reviews
6 attraction reviews
common_n_attraction_reviews_1bd8 88 helpful votes
5 of 5 stars Reviewed July 14, 2015

We really enjoyed exploring Obsidian Dome and the nearby Glass Creek Dome. The road to it is a bit bumpy and might not be good for low-riding cars, but it was fine for us in my Highlander. We were there on a cold and rainy July day, and had the place nearly to ourselves. The rocks are beautiful and it... More 

Helpful?
1 Thank TracyTraveler

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Torrance, California
4 months ago

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