Mount Apo caliber'. The cover of the book also featured Mount Apo's iconic Philippine eagle, along with three other heritage sites which have already been designated as "UNESCO World Heritage Sites". The Department of Environment and Natural Resources (DENR) submitted Mount Apo on December 12, 2009 for inclusion in the UNESCO world heritage list. The mountain is considered by DENR as the center of endemism in Mindanao. It has one of the highest land-based biological diversity in terms of flora and fauna per unit area. It has three distinct forest formations, from lowland tropical rainforest, to mid-mountain forests, and finally to high
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