Inside the Þríhnúkagígur Volcano Tour, Reykjavík

4.2 (5 reviews)
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B
Brian T.
Jun 04, 2026
Fantastic experience, very unique opportunity to go 450 feet below the surface. And they finished the trip off with a great bowl of lamb stew. The... Read more
Jenna
Jenna F.
Jul 29, 2025
This experience was incredible, a once in a lifetime excursion. You have a 2 mile hike there and back over lava fields and it’s like you’re... Read more
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Overview

Just about 20 miles (33 km) from Reykjavik sits the dormant Þríhnúkagígur Volcano, a unique natural phenomenon. Experience this wonder from the inside out with a moderate hike to the volcano's crater. You'll start with a scenic walk to the base of the volcano, passing through lava fields and valleys with views of mountain peaks. Then, you'll brave a 400-foot (120-m) descent to the bottom of the crater in an open cable lift. 

Inside the crater, chilly year-round temperatures of about 37°F (3°C) greet you. Enjoy time to explore inside the volcano, walking along designated paths that snake through the underground and into the magma chamber. Take photos and admire the vibrant colors of the rocks before heading back up to the surface. 

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Traveler reviews

5 total ratings, 4 with reviews
4.2
Feature ratings
Quality of Experience
5.0
Guides, Drivers and Staff
5.0
Transport
5.0
B
Brian T.
Boston, MA | Reviewed on Jun 04, 2026
Fantastic experience, very unique opportunity to go 450 feet below the surface. And they finished the trip off with a great bowl of lamb stew. The guides were very entertaining and knowledgeable. Read more

Fantastic experience, very unique opportunity to go 450 feet below the surface. And they finished the trip off with a great bowl of lamb stew. The guides were very entertaining and knowledgeable.

Quality of Experience
Guides, Drivers and Staff
Michael
Michael H.
Phoenix, AZ | Reviewed on Jun 04, 2026
Tips for future travelers I would not pass this up. Unless you have a fear of heights or of hanging suspended 400 feet above the floor in a steel basket. It was truly a fun experience. Wear good shoes/boots as it is a 4-mile, easy walk, round trip, through lava fields to get to the entrance of the cave. After the cave the guides provided hot drinks (it was a very cold/windy/rainy day) and really tasty lamb soup. Read more
Tips for future travelers

I would not pass this up. Unless you have a fear of heights or of hanging suspended 400 feet above the floor in a steel basket. It was truly a fun experience. Wear good shoes/boots as it is a 4-mile, easy walk, round trip, through lava fields to get to the entrance of the cave. After the cave the guides provided hot drinks (it was a very cold/windy/rainy day) and really tasty lamb soup.

Quality of Experience
Guides, Drivers and Staff
Transport
Gaia
Gaia B.
Reno, NV | Reviewed on Sep 06, 2025

This was cancelled due to maintenance.

Jenna
Jenna F.
Newark, NJ | Reviewed on Jul 29, 2025
This experience was incredible, a once in a lifetime excursion. You have a 2 mile hike there and back over lava fields and it’s like you’re on another planet. The guides were knowledgeable and you got ample time inside the volcano to explore. Would 1000% recommend. Read more

This experience was incredible, a once in a lifetime excursion. You have a 2 mile hike there and back over lava fields and it’s like you’re on another planet. The guides were knowledgeable and you got ample time inside the volcano to explore. Would 1000% recommend.

Tips for future travelers

There is a bit of hiking involved. While it is mostly flat (last bit is uphill), they do go at a pretty quick pace so that may not be for everyone. They do have a guide at the back of the group so no one is left behind, and you are able to take the walk back at your own pace. That being said, if you’re up for the hike this experience is incredible!

Quality of Experience
Guides, Drivers and Staff
Grima and Katherine were great!
Transport

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