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 de Santa Rosa Laguna de Santa Rosa The Laguna de Santa Rosa is a wetland complex that drains a watershed encompassing most of the Santa Rosa Plain in Sonoma County, California, USA. The California Office of Environmental Health Hazard Assessment has issued a safe eating advisory for any fish caught in Laguna de Santa Rosa due to elevated levels of mercury and PCBs. In addition, there is a notice of "DO NOT EAT" for Black Bass. The Laguna, whose principal tributary streams rise on the southern slopes of the Sonoma and Mayacamas Mountains, is the largest tributary of Mark West Creek. The sinuous