Lake Lanao is the second largest lake and perhaps one of the deepest in the Philippines. Found in Lanao Del Sur Province in north-western Mindanao Island, it has become the bastion of Maranao civilization. It is at the heart of the Maranao homeland and culture—the prime source of food and even the formation of their culture. Not only Lake Lanao is important to the Maranao homeland, but also to the entire island of Mindanao, as it is the primary source of power for the Agus Hydroelectric power plants, that power almost the entire island. The lake itself is one of the 15 ancient lakes of the world. Yet despite all of these accolades, she sits serenely in the volcanic basin of Ranao, with lots of stories spanning more than a million years.
While four major tributaries feed water to Lake Lanao, it has only one outlet—Agus River. That same river powers entire Mindanao with strings of power plants—including the famous Maria Cristina Falls in Iligan City and Tinago Falls.
