Sierra Madre Mountains
The Sierra Madre is the longest mountain range in the Philippines. Running in the north-south direction from the province of Cagayan to the north and Quezon to the south, the mountains form the eastern backbone of Luzon Island, the largest island of the archipelago. It is bordered by the Pacific Ocean to the east. The mountain range serves as a typhoon barrier, attenuating incoming typhoons from the Pacific Ocean before reaching the central mainland.
