one of the team members, Mayo Monteza, who celebrated his birthday during the climb. One of the water spring sources is now known as Bulod's Spring, after a local guides named Bulod who volunteered (along with another locals) to join the climb. The team failed to take the summit on this first attempt, but came back two weeks afterwards. On 17 June 1982, four climbers became the first to stand at the summit. Their names are Mon Ruiz, Kim Valino, Roel Tan Torres (of UP mountaineers) and Edwin Gatia of the PMS team. Biodiversity Sibuyan Island has extremely high endemism largely due to its remoteness. More than half of the Island is covered with forest. Preliminary reports include that the forest density in Sibuyan is 1,551 trees per hectare making it the densest forest ever recorded in the Philippines. There exists a full range of forest gradient in the Philippines consisting of mangrove, lowland, montane, mossy forests, heathland, and grassland—from the shoreline up to the summit of Mt. Guiting-Guiting, There are approximately 700 vascular plant species, including 54 species that are endemic to the island. These include Nepenthes sibuyanensis; Nepenthes argentii; Heterospathe sibuyanensis Becc. (Bil-is), Agamyla sibuyanensis (Sibuyan lipstick plant); Myrmephytum beccarii Elmer (Sibuyan ant plant); Begonia gitingensis Elmer (Guiting-guiting begonia). A total of 130 species of birds have been recorded in the park, of which 102 are either known or presumed to be breeding residents. There are also nine (9) native non-flying terrestrial mammal species, nine fruit bats species, of which one is endemic, and nine (9) lizards and geckos. Gallery See also List of Ultras of the Philippines List of islands by highest point References External links Mount Guiting-Guiting Traverse by BluishTrekker (November 2-3, 2012) Map showing islands of Romblon province with Mount Guiting-guiting Natural Park highlighted on SIbuyan island Guiting-Guiting Natural parks of the Philippines Landforms of Romblon