Dozens of people have evacuated two towns on Japan’s main southern island of Kyushu where a volcano spewed ash and large rocks into the nighttime sky.

Large rocks fell as far as 2.5 kilometers (1.5 miles) from the Sakurajima volcano Sunday night in the southern prefecture of Kagoshima. Footage on Japan’s NHK public television showed orange flames flashing near the crater and dark smoke with ash billowing high above the mountaintop.