One price for every traveller: €471 per adult.
Child prices by age band are shown at checkout. Option texts and prices come from the operator's listing; prices checked on Viator on 22 October 2026.
93% of ratings with a star breakdown are 4★ or 5★: 165 of 178
Star breakdown of all 178 ratings
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Ratings collected from Guidekin, Viator & Tripadvisor.
From the base of Bláfjöll, embark on a 2-mile (3 km) guided hike across ancient lava fields. The trail is uneven and winds through a surreal volcanic landscape filled with cones and fissures. It’s a moderate hike that offers an up-close look at Iceland’s geological past. At the edge of the crater, you'll gear up with a helmet and harness before boarding an open cable elevator. This one-of-a-kind lift lowers you into the dormant volcano’s magma chamber — a rare opportunity not found anywhere else in the world. Safety briefings and professional guidance ensure a secure and memorable descent.
The tour begins with a scenic drive from Reykjavík toward the Bláfjöll (Blue Mountains). Along the way, your guide provides fascinating insight into the geology and history of the Thrihnukagigur volcano.
Pass by, no stopThese rugged volcanic peaks are home to the Thrihnukagigur volcano and are known for their dramatic terrain and otherworldly beauty. It’s a striking backdrop for the start of your hike.
1hDescend 400 feet (120 meters) into the vast and colorful magma chamber of Thrihnukagigur. Explore this incredible natural space where the glowing lava once flowed, now solidified into a kaleidoscope of mineral-stained rock formations. Your guide will explain the volcano's last eruption and the formation of this geological wonder. After your time inside the volcano, ascend back to the surface and retrace your steps across the lava fields. Take in the final views of this unique terrain before returning to your vehicle. The tour concludes with a scenic drive back to Reykjavík.
5h · Admission includedDescend into a dormant volcano on this unique small-group adventure from Reykjavik. Hike across the stunning lava fields of Iceland’s Blue Mountains before lowering into the vast magma chamber of Thrihnukagigur Volcano—last active over 4,000 years ago. Equipped with safety gear, you’ll explore the only accessible volcano interior in the world, witnessing vividly colored rock formations and a massive underground dome. This once-in-a-lifetime 5-hour experience is limited to 18 guests for a more intimate, guided journey into Iceland’s volcanic heart. Book your Thrihnukagigur Volcano tour for an unforgettable Icelandic adventure.
The operator's own notes, grouped by topic. Nothing here is added by Guidekin.
For a full refund, cancel at least 24 hours before the scheduled departure time.
| Tour | Price | Duration | Rating | Group |
|---|---|---|---|---|
| This tour · #22 of 26 | €471 | 5h–6h | 4.7 (178) | shared, max 18 |
| Fagradalsfjall Volcano Hike: The Original Local Experience | €153 | 4h | 4.97 (855) | shared |
| Reykjanes Peninsula Private Day Tour - up to 9 passengers | €18579 per group | 6h | 5.0 (84) | private |
| 2.5 HR Off-Road Tour Buggy Lava Field Adventure from Reykjavik | €285 | 3h 30m | 4.99 (82) | shared |
Ranked #22 of 26 in Lava Caves & Volcano Tours by Guidekin score (rating weighted by review volume). Prices here run from €14 to €507, median €175; typical length 5h 45m. 3 of 26 are private. Figures are live from the tour cards; the rubric is our handpicked set, not the whole market. Compare all 26 Lava Caves & Volcano Tours