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south-iceland · Iceland

Laki Craters

Lakagígar (the Laki Craters) is one of the most significant geological sites in Iceland — a 27 km fissure with 130 volcanic craters that erupted in 1783 in one of history's most catastrophic volcanic events. The eruption caused a famine that killed 25% of Iceland's population and cooled global temperatures for years. Today, the craters are carpeted in vivid green moss and accessible via highland roads in summer.

About Laki Craters

Lakagígar (the Laki Craters) is one of the most significant geological sites in Iceland — a 27 km fissure with 130 volcanic craters that erupted in 1783 in one of history's most catastrophic volcanic events. The eruption caused a famine that killed 25% of Iceland's population and cooled global temperatures for years. Today, the craters are carpeted in vivid green moss and accessible via highland roads in summer.

History & Background

Laki Craters has been a significant site in Iceland's landscape. Throughout the years, this location has played an important role in Icelandic culture and natural history.

Did You Know?

  • Iceland sits on the Mid-Atlantic Ridge where the North American and Eurasian tectonic plates meet
  • There are around 130 volcanic mountains in Iceland, about 30 of which are active
  • Iceland experiences a volcanic eruption roughly every 4-5 years on average
  • Volcanic activity has shaped Iceland's unique landscape of lava fields, hot springs, and geothermal areas

Tours Near Laki Craters

Best-rated Iceland experiences — book with free cancellation

History & Background

Laki Craters has been a significant site in Iceland's landscape. Throughout the years, this location has played an important role in Icelandic culture and natural history.

Story & Folklore

The Laki fissure erupted over eight months from June 1783 — not in a single volcano, but from a 27-kilometre row of 130 craters that opened simultaneously along a volcanic fissure. The eruption produced 14 km³ of basaltic lava (covering 565 km² — the Eldhraun lava field) and enormous clouds of sulphur dioxide and fluorine gas. The fluorine poisoned grasslands across Iceland, killing 70% of the country's livestock. Famine followed: 9,000 Icelanders died — a quarter of the population. The sulphur haze reached Europe, disrupting agriculture and contributing to the sequence of events that led to the French Revolution. A trail climbs several of the craters today. Accessible only by F-road from June to September.

Visitor Information

Best Time

Summer months (June-August) for safe access

Duration

1-3 hours depending on the site

Access

Varies; some require 4x4 vehicles or guided tours. Check road conditions.

Why Visit

Hike a system of craters that reshaped Icelandic society in 1783–84, in a landscape that still shows the raw power of what happened here.

Did You Know?

The 1783 Laki eruption released enough sulphur dioxide to kill one-quarter of Iceland's population and caused famines across Europe. Some historians believe it contributed to the conditions that led to the French Revolution.

Legends of Laki Craters

Laki Craters has been part of Icelandic folklore for generations. Local tales speak of hidden people (huldufólk) and other supernatural beings who inhabit the area. According to tradition, this place deserves respect and visitors should be mindful of the ancient spirits who call it home.

Hidden Gems Nearby

Lava Formations Close-Up

Look carefully at the lava formations near Laki Craters — each tells a story of how it cooled.

Rope lava, pillow lava, and columnar basalt each formed under different conditions, creating a geological textbook in stone.

Moss & Lichens

The moss and lichen growing on the volcanic rock are some of the first life to colonize new lava fields.

Some of these organisms grow less than 1cm per year, meaning the patches you see may be decades or centuries old.

Sunset Colors

The volcanic rock takes on incredible red and gold hues during sunset.

The iron-rich minerals in the lava glow in warm light, creating a photographer's paradise.

Practical Information

Best Time

Summer months (June-August) for safe access

Duration

1-3 hours depending on the site

Access

Varies; some require 4x4 vehicles or guided tours. Check road conditions.

Frequently Asked Questions

Is it safe to visit volcanic sites in Iceland?

Most volcanic sites are safe when you stay on marked trails. Always check SafeTravel.is for current volcanic activity alerts.

Do I need a guide to visit this site?

Many volcanic sites can be visited independently, but guided tours offer valuable geological insight and enhanced safety.

Can I visit in winter?

Access depends on the specific site and road conditions. Check road.is for current conditions before your visit.

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