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
Laguna (province) region in Luzon. The province is situated southeast of Metro Manila, south of Rizal, west of Quezon, north of Batangas and east of Cavite. Laguna is the third largest province in the CALABARZON region and the 63rd largest in the entire country. The municipalities of Cavinti and the city of San Pablo have the largest land areas with and , respectively. The municipality of Victoria has the smallest land area with . Laguna lies on the southern shores of Laguna de Bay, the largest lake in the country. The land near Laguna de Bay can be considered to be narrow