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A volcanic eruption in Iceland forced tourists to evacuate the Blue Lagoon geothermal spa on Wednesday as images captured lava flowing through a fissure in the Earth’s surface.
The eruption began around 4 a.m. following an intense seismic swarm on the Reykjanes Peninsula, southwest of the capital, Reykjavik, Iceland’s Met Office said.
“In an abundance of caution, the town of Grindavík and the Blue Lagoon were successfully evacuated,” Iceland’s government said. “Travelers in the area are advised to monitor air quality, as gas pollution from the eruption site may occur.”
Lava from the eruption is flowing southeast from a fissure in the barren landscape that is 2,296 to 3,280 feet wide, according to the Met Office.

Tourists enjoying the Blue Lagoon geothermal spa. (Danuta Hamlin)
“The Icelandic Meteorological Office, The Department of Civil Protection and Emergency Management, and a team of scientists from the University of Iceland closely monitor and analyze developments relating [to] seismic activities,” it also said.
Officials said there have been a dozen volcanic eruptions on the Reykjanes Peninsula dating back to 2021.
“There is no way of accurately predicting whether, where, or when seismic activity may result in a volcanic eruption or the possible size of such an eruption, but they are closely monitored and constantly evaluated based on the best scientific data available,” Iceland’s government said.

The eruption on Wednesday, July 16, 2025, as seen from a Coast Guard helicopter during a surveillance flight. (The Icelandic Met Office/Halldór Björnsson)
“Iceland is situated on the Mid-Atlantic Ridge, where the North American and Eurasian tectonic plates diverge, making it one of the most active volcanic regions in the world. Regular seismic events are a characteristic feature of Icelandic geology, ranging from minor tremors to significant earthquakes,” it added. “Seismic activity in Iceland is often due to magma movement beneath the earth’s crust. It may sometimes result in magma seeking the easiest path to the surface and becoming a volcanic eruption.”
The Associated Press contributed to this report.