Inside the Volcano: Small-Group Tour and Lava Field Hike

Reykjavik , Iceland

Inside the Volcano: Small-Group Tour and Lava Field Hike

Active

(168 reviews)

5h - 6h

For a full refund, cancel at least 24 hours before the scheduled departure time.

Instant confirmation

Mobile or paper ticket accepted

About this experience

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.

Available options

Inside the Volcano tour

Pickup included

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

Detailed itinerary

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.

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.

Stop 4

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.

What's not included

Food and drinks

Gratuities

Outdoor Clothing and Hiking Shoes

Available languages

Guide guide

Reviews breakdown

Viator 4.8

129 reviews

5★

111

4★

3★

2★

1★

Tripadvisor 4.8

39 reviews

5★

4★

3★

2★

1★

Important information

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.

Meeting point

Grandi by CenterHotels
Icelandair Hotel Reykjavík Marina

Important notes

• Hiking boots are recommended
• Dress appropriately for a mountain hike

About Reykjavik

Reykjavik is the world's northernmost capital city, known for its vibrant cultural scene, stunning natural surroundings, and unique Icelandic charm. It offers a blend of modern amenities and ancient geothermal wonders, making it a must-visit destination for travelers seeking both adventure and relaxation.

Top Attractions

Hallgrímskirkja

This iconic church is a landmark of Reykjavik, known for its distinctive architecture and towering spire. It offers panoramic views of the city from its tower.

Architecture/Religious 1-2 hours Moderate (ISK 1000 for the tower)

Harpa Concert Hall

A stunning modern concert hall with a glass facade that reflects the surrounding landscape. It hosts a variety of performances and events.

Architecture/Entertainment 1-2 hours Free to enter, performance tickets vary

Blue Lagoon

A geothermal spa known for its milky-blue waters rich in minerals. It's a popular spot for relaxation and rejuvenation.

Nature/Relaxation Half a day Expensive (ISK 49,900 and up)

Reykjavik Art Museum

A museum showcasing contemporary Icelandic and international art. It's housed in a striking building with a glass facade.

Museum 1-2 hours Moderate (ISK 1400)

Perlan Museum

A unique museum located in a glass dome that offers a variety of exhibits, including a glacier exhibit and a planetarium.

Museum 2-3 hours Moderate to Expensive (ISK 3,990 and up)

Must-Try Local Dishes

Plokkfiskur

A traditional Icelandic fish stew made with mashed potatoes, white fish, onions, and béchamel sauce.

Main Course Contains fish and dairy

Hákarl

Fermented shark, a traditional Icelandic delicacy known for its strong smell and taste.

Snack Contains fish

Skyr

A thick, creamy Icelandic yogurt-like dairy product, often served with berries or cream.

Dessert Contains dairy

Rúgbrauð

A dense, dark rye bread traditionally baked underground using geothermal heat.

Bread Vegan

Popular Activities

Glacier hiking and ice climbing Whale watching Snowmobiling on a glacier Caving and lava tunnel exploration Visiting geothermal spas like the Blue Lagoon or Sky Lagoon Enjoying a traditional Icelandic massage or spa treatment Taking a leisurely walk around Tjörnin Lake in Reykjavik Visiting museums and galleries

Best Time to Visit

June to August

This is the warmest time of the year with long daylight hours, making it ideal for outdoor activities and sightseeing. The city is lively with numerous festivals and events.

8°C to 13°C (46°F to 55°F) 46°F to 55°F

Practical Information

Language

Official: Icelandic
Widely spoken: English, Danish, German
English: Widely spoken

Currency

Icelandic Króna (ISK)

Time Zone

GMT+0

Electricity

230VV, 50HzHz

Safety Information

Overall Safety Rating: Generally safe

Iceland is a very safe country with low crime rates. However, it's always important to be aware of your surroundings and take precautions to ensure your safety.

Important Precautions:

• Keep your valuables secure and be aware of your surroundings, especially in crowded areas
• Be cautious when using ATMs, and only use ATMs located in secure, well-lit areas
• Research tour operators and rental companies before booking to ensure they are reputable and legitimate

Getting there

By air

Keflavík International Airport • 50 km (31 miles) from Reykjavik

By bus

BSÍ Bus Terminal

Getting around

Public transport

The bus system is efficient and affordable, with frequent services and easy-to-use ticketing.

Taxis

Available • Apps: Bustravel, Uber (limited availability)

Rentals

Car, Bike, Scooter

Neighborhoods

Downtown Reykjavik Hlemmur Vesturbær

Day trips

Golden Circle

230 km (143 miles) from Reykjavik • Full day

A popular day trip route that includes three of Iceland's most famous attractions: Þingvellir National Park, Geysir Geothermal Area, and Gullfoss Waterfall.

South Coast

150-200 km (93-124 miles) from Reykjavik • Full day or overnight

A scenic drive along Iceland's south coast, offering a variety of attractions, including waterfalls, black sand beaches, and glaciers.

Snæfellsnes Peninsula

240 km (149 miles) from Reykjavik • Full day or overnight

A scenic peninsula known as 'Iceland in Miniature' due to its diverse landscapes, including mountains, glaciers, lava fields, and beaches.

Festivals

Reykjavik Arts Festival • Late May to early June Iceland Airwaves • Early November Reykjavik Winter Lights Festival • Late January to early February

Pro tips

Visit the Blue Lagoon or another geothermal spa for a relaxing and rejuvenating experience
Explore Reykjavik's street art and murals, which can be found throughout the city
Take a day trip to the Golden Circle or another nearby attraction for a taste of Iceland's natural wonders
Try traditional Icelandic food, such as lamb soup, fish stew, and fermented shark
Visit a local brewery or distillery and sample Icelandic craft beer or spirits