HUSAVIK, Iceland (AP) 鈥 The Blue Lagoon geothermal spa 鈥 one of Iceland鈥檚 biggest tourist attractions 鈥 closed temporarily as a swarm of earthquakes put the island nation鈥檚 most populated region on alert for a possible volcanic eruption.
Guests rushed to leave the spa鈥檚 hotels in the early hours of Thursday, after they were rattled awake shortly before 1 a.m. by a magnitude 4.8 quake, the strongest to hit the region since the recent wave of seismic activity began on Oct. 25.
Bjarni Stefansson, a local taxi driver, described a scene of confusion when he arrived at the Retreat Hotel, where lava rocks had fallen on the roadway and the parking lot was jammed with 20 to 30 cabs.
鈥淭here was a panic situation,鈥 Stefansson told The Associated Press. 鈥淧eople thought a volcanic eruption was about to happen.鈥
The area around Mount Thorbjorn on the Reykjanes Peninsula has been shaken by hundreds of small earthquakes every day for more than two weeks due to a buildup of volcanic magma some 5 kilometers (3.1 miles) underground. Land in the region has risen by 9 centimeters since Oct. 27, according to the Icelandic Met Office, without showing imminent signs of eruption.
Scientists are closely monitoring the situation for any indication that the seismic activity is getting closer to the surface, which could be an indication that the magma is breaking through the earth鈥檚 crust, the Met Office said.
鈥淧resently, there are no signs that earthquake activity is becoming shallower,鈥 the agency said on its website. 鈥淗owever, the situation could change quickly, and it is not possible to exclude a scenario involving a lava-producing eruption in the area northwest of Thorbjorn.鈥
, averages an eruption every four to five years. The most disruptive in recent times was the 2010 eruption of the Eyjafjallajokull volcano, which spewed huge clouds of ash into the atmosphere and led to widespread airspace closures over Europe.
The Reykjanes Peninsula on Iceland鈥檚 southwestern coast is includes a volcanic system that has erupted three times since 2021, after being dormant for 800 years.
Previous eruptions occurred in remote valleys, without causing damage. While scientists say that is the likely outcome of the current activity, the magma storage chamber currently building up again could erupt less than 3 kilometers (1.8 miles) from the Blue Lagoon.
In the worst-case scenario, lava would threaten the town of Grindav铆k and the Blue Lagoon, along with the pipelines channeling hot water to thousands of homes that are heated with geothermal energy.
鈥淲e need to be prepared for the worst,鈥 volcanologist Thorvaldur Thordarson said. 鈥淢agnitude 5 earthquakes, such as the one last night, are known to precede eruptions.鈥
The Blue Lagoon, where tourists bask in pools of seawater naturally heated deep underground, said it decided to close temporarily due to the night鈥檚 鈥渄isruption of the guests鈥 experience鈥 and the prolonged stress on employees.
The resort will remain closed until Nov. 16, the company said in a statement. It had been criticized for not acting sooner.
Spokeswoman Helga Arnadottir told the AP that close to 30 guests left the resort following the earthquake, but most belonged to one group traveling together.
The Met Office reported that the peninsula was shaken by about 1,400 quakes in the 24 hours through midday Thursday.
At Grindav铆k, a fishing town of 3,400 people, residents have experienced a series of seismic episodes since the Reykjanes Peninsula began to rumble three years ago. But last night鈥檚 quakes were stronger.
Retired beautician Hildur Gunnarsd贸ttir, 68, said she spent the night cruising around in her Volkswagen Passat to 鈥済et a break from feeling the earthquakes.鈥
Gunnarsdottir tracks seismic activity on a phone app called My Earthquake Alerts.
鈥淚 turned off notifications days ago,鈥 she said. 鈥淭he phone was vibrating constantly.鈥
