A volcano on a southwestern Japan island erupted early Monday, the weather agency said, warning of the potential for big rocks being hurled into the air within about a 2-kilometer radius of the crater.The eruption occurred at the crater of Mt. Otake on Suwanose Island of Kagoshima Prefecture at 2:48 a.m., prompting the Japan Meteorological Agency to raise the volcanic activity alert level by one notch to 3 on a scale of 5, meaning that people should not approach the crater. There were no immediate reports of injuries.Following the eruption, the Japanese government set up a liaison office at…READ FULL ARTICLE