The volcano, on the Reykjanes peninsula in southwestern Iceland, began erupting at Sundhnukar on Wednesday night and peaked at about 2 a.m. local time Thursday, according to the Icelandic Meteorological Office. It has prompted evacuations at the Blue Lagoon, an iconic tourist destination, and the nearby town of Grindavik.

The eruption poses no current threat to air travel but authorities are warning of gas emissions across the surrounding area.