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
Mount Craddock US-ACAN redefined Mount Craddock in 2006 to apply to the southernmost peak described above. The mountain was named by US-ACAN for J. Campbell Craddock (1930–2006), leader of a University of Minnesota expedition (1962–63) that made geological investigations and cartographic surveys in the Sentinel and Heritage Ranges of the Ellsworth Mountains. During 1960–61, Craddock led a Minnesota geological expedition in examining the Jones Mountains. Mount Craddock is the second-highest point of the Craddock Massif which includes Mount Rutford (highest point), Rada Peak, and Bugueño Pinnacle. Rutford was named for R. H. Rutford, Antarctic geologist and colleague of Craddock. Rada Peak and