A volcano in southwest Iceland has started erupting in an uninhabited valley near Keflavik Airport, the country’s international air traffic hub. The airport is still open without flight disruption, but it is unclear what will happen next.

Eruptions in Iceland are pretty often. Iceland is located above a volcanic hotspot. It receives an eruption every 4-5 years. The current eruption threatens an already chaotic summer travel season, with airlines experiencing ongoing delays and cancellations amid staffing shortages and surging flight demand.

A nearby volcano’s last eruption, which lasted about six months, officially ended just eight months ago.

“We will of course continue to monitor the situation closely and now we also benefit from the experience gained from last year’s eruption,” Katrín Jakobsdóttir, Iceland’s prime minister, said in a statement.