The Pacific Ring of Fire, often known as the circum-Pacific belt, is the world's greatest seismic belt, spanning Chile, Japan, and Southeast Asia. With nearly 130 active volcanoes, four minor earthquakes each day, and its location between the most active seismic area on the planet, Indonesia is the hottest point on the Ring of Fire. Because of population density, many Indonesians live perilously close to active volcanoes with regular rumblings.