The Philippines' most active volcano spewed fountains of red-hot lava and massive ash plumes anew Tuesday in a dazzling but increasingly dangerous eruption that has sent more than 56,000 villagers fleeing to evacuation centers. Lava fountains gushed up 700 meters (2,300 feet) above Mount Mayon's crater and ash plumes rose up to 3 kilometers (1.9 miles) Monday night. At least three major blasts followed Tuesday, including an explosion at nightfall that was capped by one of the most massive lava displays since the volcano started acting up more than a week ago, the Philippine Institute of Volcanology and Seismology said.