Iceland has closed its biggest tourist attraction. People were running away from the spa because of the earthquake

The Blue Lagoon, located southwest of the Icelandic capital Reykjavík, will remain closed for a week. According to The Guardian, a relatively strong earthquake hit the area shortly after midnight on Thursday, followed by hundreds of aftershocks.

Dozens of frightened guests allegedly left the resort, which also has two hotels, in taxis at night. “The Blue Lagoon will carefully monitor the development of seismic activity in the coming days and re-evaluate the situation accordingly,” the geothermal spa said.

According to The Guardian, the southwest of Iceland has been restless for several days. About 22,000 aftershocks have been recorded in the area since October 25, prompting authorities to declare a heightened state of alert on the Reykjanes peninsula.

Seismologists said that seismic activity can still be expected, but there are no indications that any of Iceland’s volcanoes are about to erupt. However, the Department of Civil Defense has prepared an evacuation plan for the village of Grindavík near the Blue Lagoon, should a strong earthquake or volcanic eruption occur.

The strongest tremor on Thursday night reached 4.8 and was recorded west of Thorbjörn mountain; over four it also had several other aftershocks. “This seismic activity is the result of continued magma accumulation,” seismologists said, according to The Guardian.