A volcano in northern Ethiopia erupted Sunday, marking its first known eruption in 12,000 years. The volcano, called Hayli Gubbi, spewed ash up to nine miles into the air for several days, leading to flight cancellations and spreading a layer of dust across nearby communities.

Experts say another eruption from Hawaii's Kilauea volcano is imminent, as livestream footage shows lava beginning to flow from its summit this weekend.