Crocker Range Park (CRP) is located in the west coast of Sabah, East Malaysia in Borneo (latitude 5°07' to 5°56'N and longitude 115°50' to 116°28'E). This park is about 110 km long and 15 km wide, covering an area of 139,919 ha, making it the largest terrestrial park and protected area in Sabah. This park was first designated as a Forest Reserve under the Forest Ordinance in 1969 but was subsequently converted to a State Park in 1984 for the conservation of natural resources and ecosystems, under the jurisdiction of Sabah Parks Trustees (Usui et al. 2006). In June 2014, Crocker Range was designated as a UNESCO Biosphere Reserve consisting of the whole area of CRP and the three forest reserves within the range.