A volcano that Russian scientists say was dormant for 600 years erupted Saturday night, sending ash nearly 400 miles into the skies.

The eruption of the Krasheninnikov volcano began on Saturday evening, according to the Kamchatka Volcanic Eruption Response Team.

A volcano on Russia’s Kamchatka Peninsula has erupted for the first time in hundreds of years. The Krasheninnikov volcano sent ash six kilometers into the sky, according to the Kronotsky Reserve, where the volcano is located.