The most notable of the seven volcanoes to erupt is Krasheninnikov. On Sunday, Krasheninnikov shot an ash plume up to 3.7 miles (6 kilometers) into the air, according to the BBC. It was the first time experts had registered its eruption since the 15th century.

Russia’s Krasheninnikov volcano erupted for the first time in centuries on August 3, sending ash and gas nearly four miles into the atmosphere—less than 150 miles away from the epicenter of the magnitude 8.