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
Mount Apo in Mt. Apo Natural Park. This waterfall flows into the Sibulan River, which flows to the Davao Gulf. Grasslands – The grasslands are characterized by the dominance of Cogon grass ("Imperata cylindrica") and "Saccharum spontaneum". Other grasses and ferns also thrive, especially along banks of creeks, streams, and rivers and on steep slopes. The Mt. Apo 1 and Mt. Apo 2 geothermal plants, each possess a rated capacity of 54.24 megawatts. Owned and operated by Energy Development Corporation (EDC) the power plants were commissioned in February 1997 (Mt. Apo 1) and June 1999 (Mt. Apo 2) respectively, under a build-operate