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
Calamba, Laguna in Calamba and this geographic position makes the city a gateway to the southern provinces of Luzon. The highway at the end of the South Luzon Expressway leads east to the other towns of Laguna and south towards the provinces of Batangas and Quezon. Calamba City is bordered by Cabuyao City to the north, Los Baños to the east, by the province of Batangas to the south, specifically the municipalities of Santo Tomas, Tanauan City and Talisay, and by the province of Cavite to the west, with Tagaytay City and Silang. Laguna de Bay the country's largest lake, forms the