Calabarzon strategic importance, Corregidor is found at the mouth of Manila Bay and is under the jurisdiction of Cavite City. Laguna has rugged terrain, with narrow plains near the shores of Laguna de Bay and mountainous ranges further inland. Laguna de Bay is the largest lake in the Philippines, and is named after the town of Bay. Laguna is also home to Mount Makiling, a dormant volcano near Los Banos reputed for its mystical properties. There are also a lot of hot springs near the Makiling area, especially in San Pablo. Another famous landmark in Laguna are the Pagsanjan Falls, in
Laguna de Bay The lake is a multipurpose resource. In order to reduce the flooding in Manila along the Pasig River, during heavy rains, the peak water flows of the Marikina River are diverted via the Manggahan Floodway to Laguna de Bay, which serves as a temporary reservoir. In case the water level on the lake is higher than the Marikina River, the flow on the floodway is reversed, both Marikina River and the lake drain through Pasig River to Manila Bay. The lake has been used as a navigation lane for passenger boats since the Spanish colonial era. It is also used