Taal Volcano is part of a chain of volcanoes along the western side of the edge of the island of Luzon, which were formed by the subduction of the Eurasian Plate underneath the Philippine Mobile Belt. Taal Lake lies within a caldera formed by explosive eruptions between 140,000 and 5,380 BP. Each of these eruptions created extensive ignimbrite deposits, reaching as far away as where Manila stands today.