Mount Arayat is an isolated potentially active stratovolcano in the Central Luzon plains. Located within vast agricultural lands of Pampanga, it rises prominently to a height of 1,033 metres above sea level. Its southern half lies within the municipality of Arayat, while its north half and summit lies within Magalang. Ten miles to the west of Mount Arayat is Angeles City and the former Clark Air Base.