Hekla — The Gateway to Hell
Iceland's most feared volcano — active, unpredictable, and giving less than one hour of warning
Hekla is a 1,491 m stratovolcano in southern Iceland, historically called the 'Gateway to Hell.' It is part of a 40 km fissure system and typically produces VEI 3–5 explosive eruptions. Medieval Europeans believed the souls of the damned passed through its crater. Today, Hekla remains one of Iceland's most active and unpredictable volcanoes — and it is currently overdue for its next eruption.
Eruption Pattern
Hekla has erupted more than 20 times since Iceland was settled in the 9th century. Its eruption cycle has historically ranged from 10 to 50 years, though recent gaps have been shorter. The volcano's most alarming characteristic is its minimal warning time — seismic activity typically begins less than one hour before an eruption begins.
The current quiet period since 2000 is the longest in recorded history, leading scientists to believe Hekla may be building toward a significant eruption.
- More than 20 eruptions since settlement
- Part of 40 km fissure system
- Erupts roughly every 10–50 years
- Currently 25+ years since last eruption — the longest gap on record
- Gives less than 1 hour of seismic warning
Historical Impact
- 1104: First recorded eruption; destroyed farms, deposited thick tephra across the south
- 1693: Large explosive eruption with heavy ashfall affecting farmland
- 1845–46: Produced lava flows and ash that damaged agricultural land
- 1947–48: One of the 20th century's largest eruptions
- 2000: Most recent eruption — 7 km fissure, ash 15 km high, significant lava flows
The Gateway to Hell
Medieval Europeans feared Hekla as the entrance to the underworld. Its distinctive elongated ridge dominates the southern Iceland landscape, visible from vast distances across the farmlands. Medieval maps label it 'Hekla, prison of souls.'
Despite its fearsome reputation, the slopes of Hekla support grazing land right up to the snowline, making the contrast between pastoral beauty and volcanic danger all the more striking.
Monitoring & Current Status
Hekla is monitored 24/7 by the Icelandic Meteorological Office using seismometers, GPS deformation sensors, and gas emission sensors. Evacuation routes and plans are in place for the surrounding region.
- 24/7 seismic monitoring
- GPS stations track ground deformation
- Gas emissions monitored continuously
- Evacuation plans ready for surrounding farms
Visiting & Hiking
Hekla is located about 2 hours from Reykjavik, accessible via F225 mountain road requiring a 4WD vehicle. Summer access is typically June–September. A summit hike takes 7–8 hours round trip over challenging terrain with year-round snow near the top.
Icelandic authorities do not recommend hiking Hekla due to the risk of sudden eruption with less than one hour of warning.
Safety Information
Check volcanic alerts at vedur.is before visiting. Hekla can erupt with minimal warning. Register travel plans at safetravel.is and carry emergency supplies.