
south-iceland · Iceland
Þakgilshellir
About Þakgilshellir
Discover Þakgilshellir, a remarkable lava cave nestled in the dramatic, moss-covered landscapes of South Iceland. Formed by ancient volcanic activity, this accessible cave offers a unique glimpse into Iceland's geological past, complete with a charming stream flowing out from its entrance and a cozy, sheltered area for visitors, as seen in the image.
History & Background
Þakgilshellir's history is written in the very rock that forms it, dating back thousands of years to periods of intense volcanic activity in Iceland. Like many of the country's fascinating caves, it is a lava tube, a geological formation created by the unique dynamics of flowing lava. The process begins when a stream of molten lava flows across the landscape. As the outer layers are exposed to the cooler air, they begin to solidify and harden, forming an insulating crust. Beneath this crust, the incredibly hot, liquid lava continues to flow, carving out a channel. Eventually, when the volcanic eruption subsides or the lava supply is cut off, the molten rock inside the tube drains away, leaving behind a hollow, tunnel-like cavern. These ancient formations offer a direct window into Iceland's volcanic past, showcasing the immense power and creative force of nature. Þakgilshellir stands as a tangible reminder of the island's continuous geological evolution, a place where visitors can literally walk through the remnants of a prehistoric lava flow.
Did You Know?
- ✔Formed by volcanic lava tube activity
- ✔Lava tubes can be millions of years old
Tours Near Þakgilshellir
Best-rated Iceland experiences — book with free cancellation
Why Visit
Experience Iceland's volcanic history firsthand in a unique, accessible cave with natural shelter and serene surroundings.
Did You Know?
Did you know Þakgilshellir is a lava tube, created when molten rock flowed beneath a hardened surface, eventually draining to leave behind these hollow, dramatic caverns?
The Hidden Dwelling of the Trolls
Local tales whisper that Þakgilshellir was once a secret dwelling for a family of benevolent trolls, who sought refuge within its cool, dark embrace. They say the stream flowing out of the cave carries ancient magic, a gift from these reclusive guardians of the land, bringing good fortune to those who drink from it.
Hidden Gems Nearby
The Sheltered Picnic Nook
Inside the cave entrance, you'll find rustic picnic tables and chairs, offering a unique and naturally sheltered spot to enjoy a meal or a quiet moment, protected from the elements.
It's an unexpected and cozy amenity within an ancient lava cave, perfect for a unique break.
The Serene Cave Stream and Bridge
A charming stream, fed by a small waterfall from above, gracefully flows out of the cave and under a quaint wooden bridge. This picturesque scene adds a tranquil beauty to the cave's entrance.
The combination of the flowing water, the bridge, and the cave creates a beautiful and photogenic natural tableau.
The Moss-Draped Cliffs
Above and around the cave, the hills are dramatically draped in vibrant green moss, creating a stunning contrast with the dark rock. These natural tapestries are a hallmark of Icelandic landscapes.
The lush, mossy cliffs provide a breathtaking backdrop and embody the unique natural beauty of the Icelandic highlands.
Practical Information
Best Time
Late Spring to Early Autumn
Duration
1-2 hours
Access
Accessible via a gravel F-road (F214), requiring a 4WD vehicle. A short walk from the parking area involves crossing a small wooden bridge to reach the cave entrance.
Frequently Asked Questions
Is there an entry fee for Þakgilshellir?▾
No, there is generally no entry fee to visit Þakgilshellir cave. It is freely accessible to the public.
Is Þakgilshellir wheelchair accessible?▾
Due to the gravel path, the small wooden bridge, and the uneven ground inside the cave, Þakgilshellir is unfortunately not wheelchair accessible.
What should I wear when visiting the cave?▾
We recommend wearing sturdy hiking boots or comfortable walking shoes suitable for uneven terrain. Layers of warm, waterproof clothing are also advisable, as temperatures inside the cave can be cooler, and Icelandic weather can change rapidly.
Can I bring food and have a picnic inside the cave?▾
Yes, as seen in the images, there are picnic tables inside the cave entrance, making it a perfect and unique spot to enjoy a packed lunch or snacks.
How long should I plan to spend at Þakgilshellir?▾
Allowing 1 to 2 hours is recommended. This gives you ample time to explore the cave, enjoy the picnic area, take photos, and appreciate the surrounding natural beauty.




