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 Roraima Mount Roraima Mount Roraima ( , "Tepuy Roraima" and "Cerro Roraima";) is the highest of the Pakaraima chain of tepui plateaus in South America. First described by the English explorer Sir Walter Raleigh during his 1595 expedition, its summit area is bounded on all sides by cliffs rising . The mountain also serves as the tripoint of Venezuela, Guyana and Brazil. Mount Roraima lies on the Guiana Shield in the southeastern corner of Venezuela's Canaima National Park forming the highest peak of Guyana's Highland Range. The highest point in Guyana and the highest point of the Brazilian state of Roraima