Mount Apo In the classification system used by local popular mountaineering website PinoyMountaineer.com, the difficulty of the hike is 7 out of 9. Various sights along the trail include Lake Venado, the highest lake in the Philippines, the solfataras and the old crater near its summit. Mount Apo is a headwaters catchment area of several major river systems like Marble River, Matingaw River, connecting with the Kabacan River, part of the Pulangi River, a major tributary of the Mindanao River, the Tudaya Falls, Sibulan River , and Digos River, which flows into Davao Gulf. Mount Apo Mount Apo () and () is
Lake Apo in the mountains who assaulted his granddaughter and was punished by the mountain deities for his disrespectful act by flooding the area forming the Lake Apo. The lake is a crater lake, a basin formed on an old volcanic cone that was later filled with water. It was erroneously reported as a circular rift lake, as this area is not a rift zone but a volcanic area evident by the presence of nearby volcanic peaks like Musuan Peak ( to the E), Mount Kalatungan ( to the NW), Mount Dagumbaan ( to the SW), Mount Kidongin ( to the SW),