Thrihnukagigur Volcano Tour | Go Inside a Magma Chamber
Descend into the vast and vibrant magma chamber of a dormant volcano. Iceland is the only place in the world where a tour like this exists, so do not miss your opportunity to experience of going inside a volcano.
This trip will begin when you are picked up from Reykjavík and taken to the Blue Mountains Country Park, Bláfjöll, which sits just on the outskirts of the capital area. From here, it is just a 3.2 kilometre (two mile) hike to Þríhnúkagígur volcano, where you will descend into the volcano itself.
Once you reach the crater, you will find an opening and an elevator crane. After being equipped with a helmet and harness, you will enter the lift's basket and begin your descent. Nowhere else in the world can you enter a magma chamber this way, which is part of what makes this tour so unique and worthwhile. This lift journey toward the centre of the earth covers 198 metres and takes about six minutes.
During your slow descent, the beauty of the magma chamber will become instantly apparent. Intense heat and pressure from Þríhnúkagígur’s most recent eruption, over four thousand years ago, gave the rocks an incredible colouration and texture. Expect to see smooth walls and bizarre formations in yellows, blues, reds, violets and oranges, so vibrant that it’s difficult to believe that they could be natural.
It is not just the beauty of the space that will awe you; it is also the sheer scale of it. To give some perspective on the size of the chamber, enormous monuments such as the Statue of Liberty and Reykjavík’s iconic Hallgrímskirkja church could easily fit inside it. The ground within the chamber is large enough to fit three basketball fields.
Once your descent down the chamber is complete, your guide will let you out of the elevator, and you can explore for half an hour on the ground of the volcano. You will want your camera on hand, as everything, from the blades of light falling from overhead to the most minute details of the lava rock, is worthy of a photograph.
Remember as you explore that it is only by a strange, unexpected geological process that this tour is even possible; when a volcano becomes dormant, the magma chamber usually cools and solidifies, yet for some reason in Þríhnúkagígur, it drained away, leaving behind this unimaginably beautiful space.
After your exploration, you will return to the elevator for a gentle ascent, back into the bright, open world. Once you reach the surface, you will have a meal of Icelandic meat soup waiting for you, along with hot beverages and snacks, which you can enjoy before hiking back to the van.
This experience is truly once-in-a-lifetime; descend into a dormant volcano to explore its stunning magma chamber! Do not let this opportunity pass you by. Check availability by choosing a date.
- Available: May. - Oct.
- Duration: 6 hours
- Activities: Caving
- Difficulty: Moderate
- Minimum age: 12 years.
- Languages: English
- Highlights: South Iceland,
South Iceland is the most popular part of the country and contains some of the most beautiful natural attractions in Iceland, among them the Golden Circle, some of Iceland's most famous active volcanoes as well as the beautiful Jokulsarlon glacier lagoon.
South Iceland is usually divided into the fertile South Icelandic lowlands between Hellisheidi and Eyjafjallajokull volcano on the one hand - and on the other hand the eastern part with the big volcanic glaciers Eyjafjallajokull and Myrdalsjokull (home of Katla) and flattened sands stretching towards the sea.
The South Icelandic lowlands
The South Icelandic Lowlands stretch nearly 100 km from Hellisheidi in the west towards Eyjafjallajokull in the east as a very flat and fertile farming land. From the shore the lowland stretches about km towards the inland. This is the best agriculture area in Iceland. The whole area is geologically very young, mainly of tuff type, formed during the Ice Age by the lava flows of the numerous volcanoes of the area. The area is indeed surrounded by volcanically active mountains on all sides. The glacier rivers of the area have helped filling the lavas with sand and clay, leaving it more and less smooth and fertile. Very strong earthquakes are found in this area as well.
The most active volcanoes of the area are Hekla and Eyjafjallajokull. No less active and not far off, but on the east side, is Katla, which we’ll adress in the eastern part-section. South of the mainland are the volcanic Westman Islands, famous for the 1973 eruption as well as the eruption in 1963, when Surtsey island was formed. Closely linked to the volcanic activity in the south is the geothermal heat found in many places, the best known being the Geysir area, which forms a part of the famed Golden Circle, which also consists of Gullfoss waterfall , Iceland's most famous waterfall as well as one of its most beautiful, located in the popular rafting river Hvita and Thingvellir National Park, comprising three of Iceland's most beloved natural attractions.
The earthquakes of the area bear witness to the fact that Iceland is still in shape. This is further evidenced by the endless number of fissures in the lavas, fractures in the mountains and certain pieces of lands sinking. The area of Thingvellir is the best known example of this, showcasing the continental drift. Thingvellir is a UNESCO World Heritage Site and the location of the old parliament, Althingi, (now situated in Reykjavik) and one of Iceland's most important sites.
Another of Iceland's most popular attractions is the beautiful Thorsmork valley, situated between Myrdalsjokull and Eyjafjallajokull.
Natural harbour-sites are hardly any on the South shore, due to sand produced by the glacier rivers. A few towns are found in the area, Selfoss being the biggest one, Hveragerdi is another, then there are Hella and Hvolsvollur, all conveniently located by the ring road. By the shore are three fishing villages; Thorlakshofn, Eyrarbakki and Stokkseyri. Thorlakshofn the only one of those that can accommodate modern ships and ferrys. The ferry to the Westman Islands sails from there. A new harbour has been built on the sandy coast opposite the Westman Islands. The whole south shoreline offers some of the most gigantic braker waves that you are likely to see.
Culturewise, in addition to Thingvellir, we reccomend the ancient bishop seat of Skalholt (weekends at Skalholt further offer rich music life). Also, Iceland's most famous saga, Njal's saga takes place in the South lowlands. We further recommend the large reconstructed turfhouse near Stong and the ancient excavated ruins.
For sports, horse riding is popular in the area as well as catching salmon or trout, hiking, and river rafting in Hvita.
The east part of South Iceland.
This is the area south and east of Myrdalsjokull. The volcanic glaciers Eyjafjallajokull (near the border of the eastern and western part) and Myrdalsjokull, dominate the view. The landscape has been shaped by volcanic eruptions and vast sands stretch to the sea. Some agriculture is found here, however, with the farms in a row alongside the mountains. A few large glacial rivers fall down in this area which also has striking waterfalls, such as Skogafoss and Seljalandsfoss.
Eyjafjallajokull is already well known for its 2010 eruption, disturbing air communication all over Europe for many days. Much more serious,however, would be an eruption from Katla, a volcano in the eastern part og Myrdalsjokull.
Katla’s last eruption was in the year 1918, when an enormous flood of water exploded from the glacier in a matter of minutes, threatening the local farmers of the area. Large amounts of ash and muddy material were brought to sea to form a new land of sand, Kotlutangi, later washed away by the sea. No people were killed in this eruption. Eruptions in Katla throughout the ages have further created the vast sand area Myrdalssandur. Sixteen eruptions have been recorded for Katla since 930 at intervals of 13-95 years and the volcano is being closely monitored, as time may draw near to its next eruption.
In the same volcanic system as Katla (geologically speaking), are the Lakagigar craters, northeast of Myrdalsjokull. Those erupted in the years 1783-84; producing the largest amount of lava known in historic times. The ashes hindered the sunlight from reaching down to the surface of Earth, resulting in cold climate over northern Europe.
In this area – what we call the eastern part of South Iceland -, there are many places worth visiting: Solheimajokull is a beautiful glacier in a walking distance (an outlet of Myrdalsjokull); Skogar has a very interesting museum of older time traditions and Skogafoss is only a few km away from there. One of Iceland’s most famous hiking routes, Fimmvorduhals, starts from Skogar. Southwest of the village Vik is one of Iceland’s most spectacular beaches, Reynisfjara. Together with the promontory Dyrholaey, which is the southernmost tip of the mainland of Iceland, it offers a breathtaking view with amazing rock formations, a black pebble beach, an abundance of birds and the powerful waves of the North Atlantic Ocean crashing on the beach.
Further east stretches the world's most vast sand plain, Skeidararsandur. North of the sand is the fascinating Skaftafell preservation area. At its east end, south of Hvannadalshnukur, Iceland's highest peak, is Ingolfshofdi cape, with its rich birdlife, old fishermen's shacks and its lighthouse. Following the shore further east is the incredibly beautiful and ice-filled Jokulsarlon glacier lagoon. Not far off is the region of Sudursveit, featuring the culture center and heritage museum Thorbergssetur, erected in the memory of Icelandic author Thorbergur Thordarson.Reykjavík,
Reykjavik is the capital of Iceland and the northernmost capital of a sovereign state in the world.
Despite a small population (120.000 and more than 200.000 in the Greater Reykjavik area), it is a vibrant city that draws an ever increasing number of visitors. It is the financial, cultural and governmental centre of Iceland. It also has a reputation of being one of the cleanest and safest cities in the world.
The city of Reykjavik is located in southwest Iceland by the creek of the same name. Throughout the ages, the landscape has been shaped by glaciers, earthquakes and volcanic eruptions and the area is geothermal. Much of the current city area area was subglacial during the Ice Age, with the glacier reaching as far as the Álftanes peninsula, while other areas lay under the sea. After the end of the ice age the land rose as the glaciers drifted away, and it began to take on its present form.
The coastline of Reykjavik is set with peninsulas, coves, straights and islands, most notably the island of Videy, and seabirds and whales frequent the shores. The mountain ring as seen from the shore is particularly beautiful. Mount Esja is the highest mountain in the vicinity of Reykjavik and lends its distinct feature to the whole area. This majestic mountain is also highly popular for climbing. Other notable mountains that can be seen from the seaside are Akrafjall and Skardsheidi and on clear days one may even see as far to the legendary Snaefellsjokull glacier, at the end of the Snafellsnes peninsula.
The largest river to run through the city is Ellidaa in Ellidaardalur valley, which is also one of Iceland‘s best rivers for salmon fishing.
There are no trains or trams in Iceland, but most people travel by car. The city also operates a bus system. There are two major harbours in town, the old harbour in the centre and Sundahofn in the east. The domestic Reykjavik Airport is located at Vatnsmyrin, not far from the city centre and close to Oskjuhlid and Perlan. The international Keflavik Airport at Midnesheidi heath then lies around 50 km from the city. Cars, jeeps and bicycles can be readily rented in the city and many organized tours are also being offered.
What to See & Do in Reykjavik
The local arts scene is strong in Iceland, with both annual events and single ones, many of whom have hit the international stage. For the annual ones please check our articles Best Annual Events in Iceland and the Top Ten Festivals in Iceland. Major events taking place in Reykjavik include the Iceland Airwaves, Gay Pride, RIFF (The Reykjavik International Film Festival), The Reykjavik Literature Festival, Cultural Night, the Reykjavik Arts Festival, Food & Fun, the Reykjavik Fashion Festival and the Sónar music festival.
Among famous people from Reykjavik are artists Bjork Gudmundsdottir, Sigur Ros, writers Halldor Laxness (born in Laugavegur) and Arnaldur Indridason and mayor Jon Gnarr. For more well-known and fairly-well known Icelanders, check our article on the subject.
You might also want to check our article on some of the many things to see and do in Reykjavik, such as visiting the city‘s many museums, exhibitions and galleries, checking out live music, visiting the Harpa music hall or the theatres, visiting the lighthouse at Grotta, the main shopping street of Laugavegur, visiting the old harbour and the flea market, going on a bird- and whale watching tour or visiting Videy island. We also have a top ten list of things to do.
Make sure to visit the public square of Austurvollur, one of the city‘s most popular gathering places, where you‘ll also find the national parliament, Althingi, the state church a statue of independence hero Jon Sigurdson, as well as cafés, bars and restaurants. Austurvollur was central in the 2008 protests, along with Laekjargata, home to the House of Government. You are also not likely to miss the great church of Hallgrimskirkja that towers over the city from the hill of Skolavorduholt, wherefrom you‘ll get a great view of the city.
Try a walk by the city pond, greet the many birds that frequent the area and visit the city hall, stationed by its banks. The Hljomaskalagardur is a beautiful park that lies by the pond, it ideal for a nice walk and sometimes concerts get held there. Further off is the campus of the university of Iceland, the Nordic house and the Vatnsmyri wetland, a particularly pleasant place, but be mindful of not disturbing the wildlife there and keep to the pathways.
For a nice swim on a warm day, we particularly recommend Nautholsvik beach.
Visit the Laugardalur valley, home to one of the city‘s best swimming pools, as well as the Asmundarsafn gallery, a beautiful botanical garden and a domestic zoo. A walk by the Aegissida beach, with it‘s old fishing sheds, in the west part of Reykjavik also holds a particular charm. The aforementioned Elllidaardalur valley is also a popular resort.
Another place that offers one of the city‘s best (and free) views is Perlan, up in Oskjuhlid hill. The hill itself is a popular resort, with over 176.000 trees and great opportunities for walking and cycling.
Travel to Alftanes to see the president‘s house at Bessastadir, which is also a historical site in it‘s own right, having been the educational centre of Iceland for centuries. Nearby is a beautiful lava field, Galgahraun, well worth a visit, though there is currently an environmental struggle going on as to it‘s future state.
The city is furthermore a short drive from many of Iceland‘s major attractions, most famously the Golden Circle and the Blue Lagoon. In close vicinity you‘ll also find the Heidmork preservation area, a favourite pastime resort of the people of Reykjavik, as well as the Blue Mountains, one of Iceland‘s most beloved skiing venues.
Check our Best of Reykjavik guide further for tips on the best cheap things to do in Reykjavik, some of the best restaurants in the city, happy hours, the top ten value places to eat and our two articles on the famous Reykjavik nightlife; Nightlife in Reykjavik and Nightlife and mating.
Finally, we‘d like to stress that these are only some suggestions of the many things you might check out in Reykjavik. Whatever you choose to do, we hope you‘ll be able to make the most of your visit and we wish you a pleasant stay in our capital.Bláfjöll,
The Blue Mountains are a beautiful mountain range of the tuff type, located around 20 km from Reykjavik, by the lava plateau of Hellisheidi. The mountains are the most popular skiing venue for the people of Reykjavik and its surroundings.
The mountains offer excellent slopes for downhill skiing, cross-country skiing and snowboards. The area is strong with volcanic activity, with frequent earthquakes and the lava that became Kristnitokuhraun lava field flowed from there in the year 1000. Kristnitokuhraun is located at the outskirts of the Blue Mountains. Also in the area is the fascinating underworld of the lava tube Leidarendi.Þríhnúkagígur
The crater Thrihnukagigur, east of the Blue Mountains in Southwest Iceland offers the unique experience of exploring the inside of a volcano.
Through the crater's opening you will enter a humongeous magma chamber. Vibrant in colours and remnicent of a citadel, it is considered the most amazing natural phenomenon of its kind.
Pickup time : 07:30, 08:30, 09:30, 11:30, 13:30
Pick-up from and return to your accommodation in Reykjavik
All safety gear (helmets, harness, etc.)
Small refreshments (soup, coffee/tea and perhaps some sweets)
What to bring:
Sturdy shoes for walking/hiking
Warm clothing and outerwear suited to rainy or chilly weather (The temperature inside the crater is about 5-6°C / 42-43°F)
Good to know:
The weather changes quickly in Iceland, so don't be caught unawares. It is a good idea to bring a sweater or dress in layers which you can remove if you get too warm. Jeans are not recommended for this activity, as moisture quickly spreads through denim fabric and takes a long time to dry, leaving the wearer wet and cold.
Be aware that this tour begins with a hike that is nearly an hour-long, largely uphill, and over rough terrain, thus the trip is not recommended to those with problems in their ankles, knees, back, or other similar ailments.