Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik

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5 to 6 hours (approx.)

Hotel pickup offered

Mobile ticket

Instant confirmation

Overview

Descend 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.

What's Included

Light refreshments
All necessary safety gear, helmets, harness
Descent into the Volcano
Pickup and drop-off from select locations
Guided Volcano Tour
Professional guide

Food and drinks
Gratuities
Outdoor Clothing and Hiking Shoes

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Meeting and Pickup

Pickup point

Pickup details

Pick-up is offered from most hotels and guesthouses in the capital area, as well as from cruise ports. Pick-ups from hotels in the city center are not possible from directly in front of the hotel due to traffic restrictions, instead passengers must come to the nearest bus pickup point. Please be ready 30 minutes before tour departure time. These pick-up points are the following: Bus Stop 1 - Ráðhúsið / City Hall Bus Stop 2 - Tjörnin / The Pond Bus Stop 3 - Lækjargata Bus Stop 4 - Miðbakki Bus Stop 5 - Harpa Bus Stop 6 - Safnahúsið / Culture House Bus Stop 8 - Hallgrímskirkja Bus Stop 9 - Snorrabraut Bus Stop 10 - Hlemmur Bus Stop 11 - Austurbær Bus Stop 12 - Höfðatorg Bus Stop 13 - Rauðarárstígur Bus Stop 14 - Skúlagata

Meeting point

End point

This activity ends back at the meeting point.

Detailed check-in instructions, including the exact address, are provided with your booking confirmation.

What To Expect

Thrihnukagigur Volcano

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.

Admission Ticket Free

Reykjavik (Pass By)

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.

Bláfjöll

Located just outside Reykjavík, the Bláfjöll (Blue Mountains) set the scene for your adventure. These 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.

1 hour • Admission Ticket Free

Inside The Volcano

Descend 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.

5 hours • Admission Ticket Included

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Additional Info

Confirmation is instant and will be received at time of booking
Not recommended for travelers with spinal injuries
Not recommended for pregnant travelers
Not recommended for travelers with poor cardiovascular health
Travelers should have at least a moderate level of physical fitness

Wear warm and waterproof clothing, as well as hiking boots. Sneakers and jeans are not appropriate.
Minimum age is 8 years
Be aware that this tour includes a total of 7 km hike across an uneven mountain terrain in unpredictable weather conditions. No hiking experience is needed, but this does require moderate fitness levels.
This tour/activity will have a maximum of 18 travelers

Frequently Asked Questions

(7)

Q: What is the cancellation policy for the Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik?

A: You can cancel up to 24 hours in advance of the tour for a full refund. For a full refund, you must cancel at least 24 hours before the tour start time.If you cancel less than 24 hours before the tour start time, the amount you paid will not be refunded.Any changes made less than 24 hours before the tour start time will not be accepted.Cut-off times are based on the tour local time (GMT). Read more Apr 2025