The tallest mountain in the Galapagos islands was erupting on Friday, spewing lava down its flanks and clouds of ash over the Pacific Ocean, according to Ecuador’s Geophysical Institute.

A cloud of gas and ash from Wolf Volcano rose to 3,793 meters (12,444 feet) above sea level following the eruption that began shortly before midnight Wednesday local time, the Institute said.

Ecuador’s Emergency Operations Committee said the new eruption on Isabela Island, the largest in the Galapagos chain, didn’t represent a risk to humans or to native local species. Populated areas are located at the opposite side of the island.