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
APO Hiking Society sang all of the APO Favorites and all songs from their past releases. On February 7, 2009, The Apo performed in the Open Air FTI Complex in Taguig. The free concert was sponsored in cooperation with the Taguig City hall. One month later, the Eraserheads had their Final Set Concert. On November 17, 2009, the Apo Hiking Society marked their 40th anniversary with a big concert at the SM North EDSA Skydome. It was called "APO Kayang-Kaya Pa". This was originally scheduled on September 26 but was rescheduled due to the Typhoon "Ondoy" ("Ketsana"). Last December 16, 2009, the APO