A distinct sequence of scoria pyroclastic flow deposits (SPF) from Taal Caldera (121^o E, 14^o N) in the Philippines, represents some of the youngest (5,600 to 6,800 y BP and possibly >6,800 y BP) caldera—forming events. The internal stratigraphy of the SPF reflects different flow regimes during transport and emplacement: an underlying ash surge unit, a poorly-sorted ash-rich main SPF body, and an upper cohesive ash cloud surge unit. Common SPF field features include moderately to highly vesicular cauliform scoria, gas segregation pipes, carbonized wood, and cohesive and vesiculated ash layers rich in accretionary lapilli. These field characteristics suggest that the SPF formed from a hot, gas-rich, highly concentrated pyroclastic flow. Contact with external water may have added to the explosive nature of the SPF eruptions. The SPF show very little variation in chemical composition: the dominant scoria component has 56-59 wt% SiO₂, and is highly differentiated with a Mg# of 30-45.