Mount Iriga, also known as Mount Asog, is one of the active volcanoes in the Philippines, in the province of Camarines Sur, in the Philippines.Mount Iriga is a stratovolcano about a kilometre from Lake Buhi. It rises 1196m with a base diameter of.Iriga erupted in 1628 and 1642. Iriga is generally known for its phreatic explosions.