--- title: "Inside the Volcano: Small-Group Tour and Lava Field Hike" lang: en type: tour city: Reykjavik country: Iceland price: 471 currency: EUR price_unit: per_person availability: bookable rating: 4.7 reviews: 178 duration_minutes: 300 duration_max_minutes: 360 languages: [en] free_cancellation: "true" rank_in_category: 22 of 26 (Lava Caves & Volcano Tours) schedule_checked: 2026-10-22 data_updated: 2026-10-22 canonical: https://guidekin.com/iceland/reykjavik/tours/inside-the-volcano-small-group-tour-and-lava-field-hike/ --- # Inside the Volcano: Small-Group Tour and Lava Field Hike In our comparison: #22 of 26 in Lava Caves & Volcano Tours, by rating weighted by review volume (table below). ## 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. ## Before you book - Hotel pickup: no car needed - Max 18 people: shared group - 4 start times: between 08:00 and 14:00 - Food not included: bring or buy your own - Age rule: Minimum age is 8 years **Pickup:** Hotel pickup included ## Key facts - Price: from €471 per person - Duration: 5h–6h - Rating: 4.7/5 from 178 reviews (collected from Guidekin & Viator & Tripadvisor) - Free cancellation (see policy below) - Operator: Gray Line Iceland - Group: Shared, up to 18 travellers - Guide languages: English - Start times: 08:00, 10:00, 12:00, 14:00 - Booking: Instant confirmation, mobile ticket - Price checked on Viator: 2026-10-22 ## Reviews 4.7 from 178 ratings on Guidekin, Viator & Tripadvisor. 93% of ratings with a star breakdown are 4 or 5 stars: 165 of 178. - 5 stars: 150 (84%) - 4 stars: 15 (8%) - 3 stars: 7 (4%) - 2 stars: 0 (0%) - 1 star: 6 (3%) ## What's included - Light refreshments - Professional guide - Descent into the Volcano - All necessary safety gear, helmets, harness - Guided Volcano Tour - Pickup and drop-off from select locations ## Not included - Food and drinks - Gratuities - Outdoor Clothing and Hiking Shoes ## Itinerary 1. **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... 2. **Reykjavik** (pass by, no stop) - 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. 3. **Located just outside Reykjavík, the Bláfjöll (Blue Mountains) set the scene f...** (1h) - 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... 4. **Inside The Volcano** (5h; admission included) - 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... ## Schedule - Runs: daily - Departures: 08:00, 10:00, 12:00, 14:00 - Schedule last checked: 2026-10-22 - These are published departures, not a live seat count; availability is confirmed at checkout. ## Cancellation For a full refund, cancel at least 24 hours before the scheduled departure time. ## Meeting point The meeting point is at the BSI Bus Terminal our centrally located Bus Terminal. Please be there at least 15 minutes prior to your scheduled departure. Ends: back at the meeting point ## Good to know - 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. ## Compared with other Lava Caves & Volcano Tours | 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](/iceland/reykjavik/tours/fagradalsfjall-volcano-hike-the-original-local-experience/?format=md) | €153 | 4h | 4.97 (855) | shared | | [Reykjanes Peninsula Private Day Tour - up to 9 passengers](/iceland/reykjavik/tours/reykjanes-peninsula-private-day-tour-up-to-9-passengers/?format=md) | €18579 per group | 6h | 5.0 (84) | private | | [2.5 HR Off-Road Tour Buggy Lava Field Adventure from Reykjavik](/iceland/reykjavik/tours/2-5-hr-off-road-tour-buggy-lava-field-adventure-from-reykjavik/?format=md) | €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. Full list: https://guidekin.com/iceland/reykjavik/lava-caves-volcano-tours/?format=md ## More in Reykjavik - All Reykjavik tours: https://guidekin.com/iceland/reykjavik/?format=md - This page as HTML: https://guidekin.com/iceland/reykjavik/tours/inside-the-volcano-small-group-tour-and-lava-field-hike/ Filters, the full catalogue and the URL contract for this city: https://guidekin.com/iceland/reykjavik/?format=md