Thrihnukagigur Volcano

Thrihnukagigur Volcano

Thrihnukagigur Volcano: Exploring Iceland’s Most Unique Landmark

Hidden deep within the heart of Iceland lies one of its most unique landmarks, Thrihnukagigur Volcano. This long dormant volcano is the only place on earth where visitors can explore beneath the surface of an ancient volcano thanks to its unusual magma chamber. It offers a truly unique experience that is not to be missed when visiting this remarkable country.


What is Thrihnukagigur Volcano?

Thrihnukagigur Volcano is located in the middle of the Faxaflói Bay in Southwestern Iceland, just a few kilometers from the capital, Reykjavík. It is a dormant volcano, which last erupted around 4,000 years ago. It was first discovered in 1974 by geologist Sigmundur Einarsson who recognized its potential to be explored.

The volcano has a unique geography, with a flat crater on the surface that is about 200m wide. Its three vents are located on the crater floor, each measuring around 200m deep. The volcano’s most distinctive feature is the large magma chamber located beneath the surface. This chamber is about 40m wide and 120m deep and is filled with solidified red and orange lava.


Exploring Thrihnukagigur Volcano

Exploring the magma chamber of Thrihnukagigur Volcano is an unforgettable experience. Visitors must climb down the volcano’s three vents, which are equipped with ladders and platforms. Once inside the chamber, they can marvel at the beauty of the solidified lava and unique rock formations.

The chamber is filled with warm air and there are several areas where visitors can stop and take in the breathtaking views. It is also possible to explore the chamber further, where visitors can see the remains of an ancient lake.


Thrihnukagigur Volcano Tours

The only way to explore the magma chamber of Thrihnukagigur Volcano is on a guided tour. Tours are available from May to October, and usually last around four hours. They include transportation, equipment and a guide who will explain the history and geology of the volcano.

Tours can be booked online, and it is advisable to book in advance due to the popularity of the activity. It is also possible to book private tours, which allow visitors to explore the volcano at their own pace.


Tips for Visiting Thrihnukagigur Volcano

Visiting Thrihnukagigur Volcano is an incredible experience, but there are a few things to keep in mind to ensure that it is a safe and enjoyable experience.

  •  Wear the right clothing: It is important to wear appropriate clothing when exploring the magma chamber, as temperatures inside the chamber can be between 15 and 20 degrees Celsius. Wear layers that can be easily taken off or put back on and make sure to bring a hat and gloves.
  •  Bring a camera: The magma chamber is a beautiful place and it is a great idea to bring a camera to capture the experience.
  •  Wear comfortable shoes: Exploring the magma chamber requires a lot of walking, so wear comfortable shoes that provide good grip and support.
  •  Be prepared for crowds: Thrihnukagigur Volcano is a popular attraction, so be prepared for crowds, especially during the peak season from June to August.



Thrihnukagigur Volcano is a truly unique landmark in Iceland and offers visitors an unforgettable experience. Exploring the magma chamber of this dormant volcano provides a rare opportunity to witness the geological wonders hidden beneath the surface. With its distinctive landscape and fascinating history, Thrihnukagigur Volcano showcases the natural beauty and mysteries of Iceland. If you’re planning a visit, be sure to book a guided tour, dress appropriately, and get ready for an adventure into the depths of this extraordinary landmark. Whether you’re a geology enthusiast or simply seeking a one-of-a-kind experience, Thrihnukagigur Volcano is a must-see destination in the Land of Fire and Ice.

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