MANILA, Philippines — Crater glow, or “banaag,” was observed at the summit of Kanlaon Volcano on Sunday evening, the Philippine Institute of Volcanology and Seismology (Phivolcs) reported Monday. In a Facebook post, Phivolcs said the Kanlaon Volcano Observatory reported seeing “with the naked eye for the first time incandescence at the Kanlaon Volcano summit caused
