TOPSHOT - A helicopter flies near above the lava flowing from a fissure near the Fagradalsfjall on the Reykjanes Peninsula in Iceland on ,April 6, 2021. - The volcanic eruption, which has been ongoing for more than two weeks in Iceland about 40 kilometers from Reykjavik, spread on April 5, 2021 with a new fault spewing lava, according to the meteorological institute. (Photo by Halldor KOLBEINS / AFP) (Photo by HALLDOR KOLBEINS/AFP via Getty Images)

1232166434

TOPSHOT - A helicopter flies near above the lava flowing from a fissure near the Fagradalsfjall on the Reykjanes Peninsula in Iceland on ,April 6, 2021. - The volcanic eruption, which has been ongoing for more than two weeks in Iceland about 40 kilometers from Reykjavik, spread on April 5, 2021 with a new fault spewing lava, according to the meteorological institute. (Photo by Halldor KOLBEINS / AFP) (Photo by HALLDOR KOLBEINS/AFP via Getty Images)

Photo by: HALLDOR KOLBEINS

HALLDOR KOLBEINS

Icelandic Eruptions Raise Concerns About Volcanic Activity Close to Reykjavik

By: Robin Fearon

Iceland has an international reputation as a nation of ice and fire – majestic glaciers mixed with explosive volcanic activity.

May 27, 2021

The small north Atlantic country has a volatile nature that was confirmed when a 2,000-2,300-foot-volcanic vent appeared near Mount Fagradalsfjall, only 40-mile-drive from the capital city, Reykjavik, creating a fiery lava flow visible from space.

Eruptions forecast by the University of Iceland and the country’s meteorological office began on March 19, 2021, following more than 50,000 earthquake tremors over 15 months. Fissures opened in the Geldingadalur valley south of the peak, spilling out rivers of lava and bringing an end to nearly 900 years without eruptions on the southern Reykjanes Peninsula.

Fireworks began at around 9PM as a lava field spread out from the fissure covering an area of about a square kilometer (0.39 sq mi). Compared to most other Icelandic eruptions, the lava flow was low and stable, but gases such as hydrogen sulfide, sulfur dioxide and carbon monoxide are often emitted, and can be lethal.

Authorities warned people to take care, approaching the area as residents and tourists flocked to the site in cars and on foot. Spectacular footage of the eruptions appeared on television and online around the world, with drone cameras capturing one of nature’s most arresting and powerful displays. Webcams also showed lava pouring from the lip of built-up craters.

New fissures and craters opened up over the following weeks, spilling lava into the neighboring Meradalir valley, but activity slowed. Trace analysis shows that the magma feeding the eruption was not typical for the peninsula, reflecting a distinct new magma originating from the Earth’s mantle, nine miles deep. Readings of the surface heat suggested temperatures of around 1180–1190 c or 2156–2174 F).

REYKJANES PENINSULA, ICELAND - MARCH 28: People gather on the hillside to watch the volcano erupt as the sun sets on March 28, 2021 on the Reykjanes Peninsula, Iceland. The Mount Fagradalsfjall volcano erupted on March 19, after thousands of small earthquakes in the area over the recent weeks, and was reportedly the first eruption of its kind on the Reykjanes Peninsula in around 800 years. (Photo by Sophia Groves/Getty Images)

1309736256

People gather on the hillside to watch the volcano erupt as the sun sets on March 28, 2021 on the Reykjanes Peninsula, Iceland. The Mount Fagradalsfjall volcano erupted on March 19, after thousands of small earthquakes in the area over the recent weeks, and was reportedly the first eruption of its kind on the Reykjanes Peninsula in around 800 years.

Photo by: Sophia Groves

Sophia Groves

People gather on the hillside to watch the volcano erupt as the sun sets on March 28, 2021 on the Reykjanes Peninsula, Iceland. The Mount Fagradalsfjall volcano erupted on March 19, after thousands of small earthquakes in the area over the recent weeks, and was reportedly the first eruption of its kind on the Reykjanes Peninsula in around 800 years.

Scientists said that despite being so close to Reykjavik, the eruptions were unlikely to cause as much disruption as Iceland’s last explosive eruption, from Eyjafjallajokull in 2010. Observations show that Gelingadalur formed lava cones as it erupted, but the flow was effusive and did not throw up ash and debris into the atmosphere, as happened when international air travel was stopped temporarily 11 years previously.

Light from the erupting slopes of Fagradalsfjall and the Geldingadalur valley could clearly be seen from NASA satellites, illuminating the night sky almost as brightly as the city of Reykjavik. Another commercial satellite network captured pictures showing the path cut by the molten lava in Geldingadalur.

Iceland is positioned just below the Arctic Circle, but its winter temperatures are rarely polar because of the warm ocean currents of the Atlantic Gulf Stream. Nevertheless, Iceland is home to 269 named glaciers and the largest Vatnajokull is an ice cap glacier equal in size to all glaciers on the European mainland put together–almost 90,000 square feet (8,300 sq m).


Volcanic eruptions on the island are frequent and many glaciers sit atop volcanic mountains. These subglacial volcanoes have a distinctive shape–flattened top and steep sides–and are known as tuyas or table mountains.

Next Up

The Chicxulub Crater, A Killer Asteroid, and an Extinction-Level Event

Core samples from the Chicxulub Crater paint a picture of the dinosaurs' last days.

113 Million-Year-Old Dinosaur Tracks Uncovered Due to Drought

Severe drought conditions dried up a river at Dinosaur Valley State Park in Texas leading to the pre-eminent discovery.

Survival Chemistry: The Ingredients for Life on Earth

Oxygen, hydrogen, carbon, and a few other elements from the periodic table make up 99% of our bodies.

The Coronavirus: What You Need to Know About the Virus

As the death tolls rise, Coronavirus is on the minds of people all over the world. Learn about this new virus and how we got here. Originally published: 2/20/2020 Updated: 3/9/2020

When in Roam, a Woolly Mammoth’s Tusks are the Map

Roaming with Kik--a look into a woolly mammoth’s tusks unravels its 28-year journey in prehistoric Alaska.

World's First Malaria Vaccine Offers Hope to Millions

Tens of thousands of lives could be saved each year from sickness and death caused by malaria following the World Health Organization (WHO) approval of a first-ever vaccine. Scientists have recommended the RTS,S vaccine for children in sub-Saharan Africa and other high-risk areas to prevent one of the world’s oldest and deadliest infectious diseases.

2 New Species Of Dinosaurs Found In Northwest China

A tale of two species. Massive sauropod dinosaurs discovered in northwestern China is the region’s first fossil discovery.

23,000-Year-Old Human Footprints Discovered in America

Ancient human footprints found in New Mexico suggest people may have arrived in the Americas 10,000 years before scientists had previously thought.

Sound of the Year: Awards Created to Recognize Chimes of History

From voices raised in protest for change to the final tender words uttered to a dying loved one, sound and hearing are primal in connecting humans to the world. Now those moments are being acknowledged in an annual award for the Sound of the Year, created to honor audible history and the art of noise.

Geothermal Power: Heat and Light from Below the Earth

Is geothermal power the best chance to lasting and sustainable power for generations?