Geography of the Philippines Bay. Laguna de Bay, east of Manila Bay, is the largest freshwater lake in the Philippines. Several rivers have been harnessed for hydroelectric power. To protect the country's biological resources, the government has taken a first step of preparing a Biodiversity Action Plan to address conservation of threatened species. The islands are volcanic in origin, being part of the Pacific Ring of Fire, and are mostly mountainous. The highest point in the country is the peak of Mount Apo in Mindanao, which is above sea level. The second highest point can be found on Luzon at Mount Pulag, a peak
Luzon of the best natural ports in East Asia, due to its size and strategic geographical location. The Sierra Madre mountain range continues to stretch across the western section of Central Luzon, snaking southwards into the Bicol Peninsula. The northern section of Southern Luzon is dominated by the Laguna de Bay (Old Spanish, ""Lake of Bay town""), the largest lake in the country. The lake is drained into Manila Bay by the Pasig River, one of the most important rivers in the country due to its historical significance and because it runs through the center of Metro Manila. Located southwest of