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“Best if you have a truck!”
Review of Obsidian Dome

Obsidian Dome
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Attraction details
Owner description: 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.
Reviewed 24 July 2017

Obsidian Dome is impressive if you love volcanoes and geology. However, the dirt road was too much for our little Jetta and we turned around before we got all the way to the area where you can climb. What we did see was interesting. Bring the bug repellant!

1  Thank Rich M
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC
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"black glass"
in 8 reviews
"dirt road"
in 12 reviews
"rock hound"
in 3 reviews
"small pieces"
in 2 reviews
"follow the signs"
in 2 reviews
"steep hike"
in 3 reviews
"geological site"
in 5 reviews
"an easy drive"
in 2 reviews
"parking area"
in 3 reviews
"day trip"
in 2 reviews
"interesting place"
in 2 reviews
"rocks"
in 26 reviews
"glassy"
in 5 reviews
"pumice"
in 7 reviews
"pile"
in 8 reviews
"geology"
in 10 reviews
"shiny"
in 5 reviews
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11 - 15 of 91 reviews

Reviewed 20 July 2017

Found this place and thrilled my wife who really enjoys geology. Very interesting rock formations - lots of obsidian and other cool minerals. short hike off the road up to the top of the dome.

Thank Jim P
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC
Reviewed 27 June 2017

Being a bit of a rock-hound I was keen to see Obsidian Dome as a quick stop on my San Francisco to Phoenix road trip. There are a lot of volcano sites along that road, but I think Obsidian Dome is the best one. Its not hard to find, just a few miles off the main road. The road are not paved, but I was driving a tiny rental and had no problems at all.
The dome itself is fascinating. Once upon a time it was a molten column of silica rich lava which cooled pretty quickly into a black glassy rock. The dome is a huge pile of all black rock, about 75 feet high, now very shattered into big and small pieces and sort of a lunar landscape, as nothing will grow on the black glass. It's hard and maybe dangerous to climb, as all the pieces are loose and move easily. It looks a bit like an industrial waste site, except it isn't one at all.
If you're into geography or geology it is highly recommended. You can drive off the main road, see the dome and be back on your way in half an hour, though maybe spend a bit longer if you can.

3  Thank craigallan-za
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC
Reviewed 9 June 2017

Having gone to Mammoth several times this was our first trip to Obsidian Dome and it was amazing! I have two young children 6-9 who were able to do the short hike up the mountain and they loved it.

2  Thank jessicalM3902RR
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC
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Reviewed 17 March 2017

Easy dirt road drive into a very beautiful environment. It is breathtaking and amazing to see. The road continues up to some very beautiful streams that were wonderful for picnicking. Great 1/2 day trip.

2  Thank susancC9953VS
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC

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