south-iceland · Iceland
Arnarker
Arnarker, a captivating lava tube in South Iceland, invites exploration into the Earth's volcanic past. A distinctive spiral staircase, visible at its entrance, leads visitors down into its impressive, moss-fringed cavern, revealing formations sculpted by ancient molten rock.
About Arnarker
Arnarker, a captivating lava tube in South Iceland, invites exploration into the Earth's volcanic past. A distinctive spiral staircase, visible at its entrance, leads visitors down into its impressive, moss-fringed cavern, revealing formations sculpted by ancient molten rock.
History & Background
Arnarker's origins trace back thousands of years to the powerful volcanic eruptions that shaped the Reykjanes Peninsula and surrounding areas of South Iceland. It is a classic example of a lava tube, a geological phenomenon created when highly fluid lava flows across the landscape. As the surface layers of the lava stream cool and harden, forming a crust, the molten rock beneath continues to flow, insulated by the solidifying roof. Eventually, when the volcanic activity subsides or the lava supply diminishes, the molten interior drains away, leaving behind a hollow tunnel or cavern – a lava tube. The specific age of Arnarker, like many lava tubes, can be millions of years old, though the precise eruption responsible for its formation is part of a complex volcanic history. These ancient formations are invaluable for geologists studying past volcanic activity and for visitors seeking to understand the raw, formative power of Iceland's fiery heart. The modern spiral staircase, installed for visitor access, bridges the gap between ancient geology and contemporary exploration, making this natural wonder more accessible.
Did You Know?
- ✔Formed by volcanic lava tube activity
- ✔Lava tubes can be millions of years old
Tours Near Arnarker
Best-rated Iceland experiences — book with free cancellation
Glacier Adventure at Sólheimajökull Private Tour
From $384.67
Book Now
2 hour Round Trip in Vestmannaeyjar on a RIB Boat
From $242.64
Book Now
Diamond Beach & Jökulsárlón Floating Glacier Guided Day Tour
From $1763.55
Book NowAbout Arnarker
Arnarker stands as a testament to Iceland's dramatic volcanic history, a fascinating lava tube nestled in the rugged landscape of South Iceland. Formed millennia ago by volcanic activity, it offers a unique glimpse into the Earth's geological processes. The cave's most striking feature, visible from the surface, is a modern metal spiral staircase that provides safe and intriguing access into its depths. As you descend, you're enveloped by the cool, hushed atmosphere of the underground world. Inside, the walls bear the intricate markings of ancient lava flows, showcasing the raw power that once shaped this cavern. Visitors can explore the main chamber, marveling at the unique geological formations and the interplay of light and shadow. The surrounding area is characterized by typical Icelandic volcanic terrain, with sparse vegetation clinging to the rocks. To make the most of your visit, wear sturdy shoes suitable for uneven terrain, and bring a headlamp or flashlight as lighting inside the cave can be dim. The cave's entrance can be slippery, especially in wet or icy conditions. While the spiral staircase makes access relatively easy, visitors should be comfortable with stairs. Arnarker provides a compelling experience for those interested in geology, photography, or simply a unique adventure into Iceland's subterranean wonders.
Private Tour: South Coast of Iceland by SUV or Van from Reykjavik
From $820
Book Now
Fast-Paced Glacier Snowmobile Adventure from Gullfoss
From $437.93
Book Now
Private Golden Circle Tour from Reykjavik
From $695
Book NowHistory & Background
Arnarker's origins trace back thousands of years to the powerful volcanic eruptions that shaped the Reykjanes Peninsula and surrounding areas of South Iceland. It is a classic example of a lava tube, a geological phenomenon created when highly fluid lava flows across the landscape. As the surface layers of the lava stream cool and harden, forming a crust, the molten rock beneath continues to flow, insulated by the solidifying roof. Eventually, when the volcanic activity subsides or the lava supply diminishes, the molten interior drains away, leaving behind a hollow tunnel or cavern – a lava tube. The specific age of Arnarker, like many lava tubes, can be millions of years old, though the precise eruption responsible for its formation is part of a complex volcanic history. These ancient formations are invaluable for geologists studying past volcanic activity and for visitors seeking to understand the raw, formative power of Iceland's fiery heart. The modern spiral staircase, installed for visitor access, bridges the gap between ancient geology and contemporary exploration, making this natural wonder more accessible.
Story & Folklore
Thousands of years ago, a fiery river of lava surged across the Icelandic landscape. As the outer crust cooled and solidified, the molten heart continued its relentless flow beneath, eventually draining away to leave a magnificent void – Arnarker. Today, as you approach the cave's moss-fringed entrance, a modern marvel awaits: a striking spiral staircase that gracefully descends into the Earth's embrace. With each step down, the sounds of the surface fade, replaced by the cool, quiet grandeur of the subterranean world. The air grows crisp, and the ancient rock formations, sculpted by unimaginable heat and pressure, come into view, inviting you to ponder the raw power that shaped this incredible natural wonder.
Visitor Information
Best Time
Sumar (júní-ágúst) fyrir bestu veðurskilyrði, en opið allt árið ef vegir eru greiðfærir.
Duration
45 mínútur – 1 klukkustund
Access
Aðgengilegt með venjulegum bíl á malarvegi, en 4x4 gæti verið nauðsynlegt á veturna eða eftir mikla rigningu. Stutt gönguleið frá bílastæði að inngangi hellisins.
Why Visit
Experience the unique thrill of descending into a millennia-old lava tube via a striking spiral staircase.
Did You Know?
Arnarker is a lava tube, formed when molten rock flowed beneath a hardened surface, draining away to leave hollow caverns that can be millions of years old.
Hinir Huldufólk Arnarkers: Sögur frá djúpum jarðar
Þótt engin sérstök staðbundin þjóðsaga sé almennt skráð fyrir Arnarker, trúa margir Íslendingar að hellar séu heimkynni Huldufólksins (huldufólks) eða trölla. Sagt er að í rökkrinu, ef maður hlustar vel, gæti maður heyrt veikburða bergmál af fornum söngvum þeirra berast úr djúpum hellisins.
Hidden Gems Nearby
Spíralstiginn
Áberandi málm-spíralstigi sem steypist niður í munna hellisins og býður upp á einstakan og eftirminnilegan inngang.
Hann er nútíma snerting gegn fornri jarðfræði og frábært tækifæri til ljósmyndunar sem markar upphaf neðanjarðarævintýrisins.
Forna Hraunmyndunin
Flókin mynstur og áferð á hellisveggjunum, mótuð af árþúsundum af bráðnu bergi.
Hver beygja sýnir einstaka jarðfræðilega list, frá sléttum flæðum til ójafnra stalaktíta og stalagmíta úr hrauni.
Practical Information
Best Time
Sumar (júní-ágúst) fyrir bestu veðurskilyrði, en opið allt árið ef vegir eru greiðfærir.
Duration
45 mínútur – 1 klukkustund
Access
Aðgengilegt með venjulegum bíl á malarvegi, en 4x4 gæti verið nauðsynlegt á veturna eða eftir mikla rigningu. Stutt gönguleið frá bílastæði að inngangi hellisins.
Frequently Asked Questions
Is there an entry fee for Arnarker?▾
No, there is no entry fee to visit Arnarker cave. It is freely accessible to the public.
What should I wear and bring when visiting Arnarker?▾
Wear sturdy, closed-toe shoes suitable for uneven and potentially slippery terrain. It is advisable to bring a headlamp or flashlight as the cave can be dark, and dress in warm layers, as temperatures inside are consistently cool regardless of the outside weather.
Is Arnarker suitable for children or people with mobility issues?▾
While the spiral staircase makes access easier, it still involves descending and ascending a significant number of steps. The interior of the cave has uneven ground. It may not be suitable for very young children, those with severe mobility issues, or fear of heights.
Is parking available at Arnarker?▾
Yes, there is a designated parking area near the cave entrance. From the parking, it's a short walk to the spiral staircase leading into the cave.
Can I explore the cave on my own, or do I need a guide?▾
Arnarker can be explored independently. No guide is required, but visitors should exercise caution, especially regarding slippery surfaces and dim lighting. Always inform someone of your plans if exploring alone.