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 Niguel Lake Laguna Niguel Lake Laguna Niguel Lake, formerly known as Sulphur Creek Reservoir, is an artificial fishing and recreational lake in Laguna Niguel, California. It is created by the Sulphur Creek Dam, which was completed in 1966. It is located at and is above sea level. It is fed from two sources, one of which is Sulphur Creek itself and the other, a storm drain. It is accessed from La Paz Road, which runs along its east shore. Surrounding the reservoir is the Laguna Niguel Regional Park. In addition, within the lake on the large island is a protected bird sanctuary.