Mount Lokon volcano Jakarta - Arabstoday Mount Lokon volcano on Indonesia's Sulawesi island erupted Sunday afternoon with a loud explosion and spewing ash, sources said. No casualties were reported when the 1,578-metre volcano erupted. Authorities advised residents not to do any outdoor activity within a 2.5-kilometre radius of the crater. Mount Lokon has been on high alert status since July and has maintain high volcanic activity ever since. Indonesia has about 500 volcanoes, 128 of them classified as active and 65 listed as dangerous, according sources.