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Thrihnukagigur Thrihnukagigur
206 Hafnarfjörður, Iceland
☎ +354 519 5609

Last Updated: 12/16/2023

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Þríhnúkagígur is a unique and stunning volcanic crater located in Iceland, near the capital city of Reykjavik. What sets Þríhnúkagígur apart from other volcanic structures is the fact that it is an open volcanic magma chamber, allowing visitors to descend into its depths and explore its vibrant and colorful interior.
- Formation: Þríhnúkagígur is the result of a volcanic eruption that occurred over 4,000 years ago. After the eruption, the magma chamber, which had once been filled with molten rock, emptied, leaving behind a large and empty chamber.

- Size: The main chamber of Þríhnúkagígur is enormous, with a depth of about 120 meters (400 feet) and a width of approximately 63,000 cubic meters (2.2 million cubic feet). It's one of the few places on Earth where visitors can descend into a dormant volcano and witness the geological forces at work.

- Colorful Interior: The interior of the magma chamber is known for its vibrant colors, created by mineral deposits and oxidation on the crater walls. The hues range from red and purple to gold and beige, creating a visually stunning and otherworldly environment.

- Descents: Þríhnúkagígur is unique in that it offers guided descents into the magma chamber. Visitors are lowered by an open cable lift system, providing them with a once-in-a-lifetime opportunity to explore the inside of a volcano. The descents are typically offered as part of guided tours, and visitors are provided with safety gear.

- Accessibility: Access to Þríhnúkagígur is seasonal, and tours are usually offered during the summer months. The site is situated in the Bláfjöll Country Park, about a 30-40 minute drive from Reykjavik. Visitors often take a short hike to reach the cable lift site.

- Tour Operators: Various tour operators in Iceland offer guided tours to Þríhnúkagígur, providing transportation, safety equipment, and knowledgeable guides who share information about the geological history of the volcano.

Visiting Þríhnúkagígur offers a rare and extraordinary experience to explore the inner workings of a volcano. It is essential for visitors to participate in guided tours for safety reasons and to minimize the environmental impact on this unique geological site.
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Iceland is a Nordic island country located in the North Atlantic Ocean, known for its stunning natural landscapes, unique geology, and vibrant culture. Iceland is situated on the Mid-Atlantic Ridge, a tectonic boundary where the North American and Eurasian plates meet. Its capital and largest city is Reykjavík, which is home to about 36% of the country's roughly 387,800 residents in 2022.

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