Mount Pinatubo
Mount Pinatubo Mount Pinatubo ( Sambal : Bakil nin Pinatubu ; Kapampangan : Bunduk/Bulkan ning Pinatubu, Bunduk ning Apu Malyari ; Pangasinan : Palandey/Bulkan na Pinatubu ; Ilokano : Bantay Pinatubo ; Tagalog : Bundok/Bulkang Pinatubo ) is an active stratovolcano in the Zambales Mountains , located on the tripoint boundary of the Philippine provinces of Zambales , Tarlac and Pampanga , all in Central Luzon on the northern island of Luzon . ] Its eruptive history was unknown to most before the pre-eruption volcanic activities of 1991, just before June. Pinatubo was heavily eroded , inconspicuous and obscured from view. It was covered with dense forests which supported a population of several thousand indigenous Aetas .