Hot lava flows from the crater of Mount Semeru as its activity continues in this photo taken with slow shutter speed in Lumajang, East Java, Indonesia, late Sunday, Jan. 17, 2021. The highest volcano on Indonesia's most densely populated island of Java, spewed hot clouds as far away as 4.5 kilometers (nearly 3 miles) on Saturday. There were no immediate evacuations, but the National Disaster Mitigation Agency warned people who live in the villages on the slopes of the 3,676-meter (12,060-foot)-high mountain to be vigilant in looking for signs of danger. (AP Photo/Hendra Permana)