Northern Sierra Madre Natural Park and outlying areas inclusive of the buffer zone (2006)Northern Sierra Madre Natural Park and outlying areas inclusive of the buffer zone (2006) is a Tentative List of UNESCO World Heritage Sites located at , Isabela; Aurora, Region II.
The Northern Sierra Madre Natural Park (NSMNP) is within the Sierra Madre Biogeographic Zone (SMBGZ) which lies along the eastern side of Central Luzon. The Northern Sierra Madre Natural Park (NSMNP) is one of the ten (10) priority protected areas in the country.
The Northern Sierra Madre Natural Park (NSMNP) is considered one of the most important of the protected areas system of the Philippines. It is the largest protected area in the country and the richest in terms of genetic, species and habitat diversity. The importance of the park is underscored by the myriad of rare and endangered species of flora and fauna that it supports. These include Philippine Eagle (Pithecophaga jefferyi ), Golden Crowned Flying Fox (Acerodon jubatus ), Philippine Eagle-Owl ( Bubo philippensis), Isabela Oriole (Oriolus isabellae ), Green Sea Turtle ( Chelonia mydas), Loggerhead Turtle ( Caretta caretta ), Hawksbill Turtle (Erethmochelys imbricata), Philippine Crocodile (Crocodylus mindorensis ) and Dugong ( Dugong dugon ).
The mountain range system provides the area for growth and development of unique habitats and their associated flora and fauna, e.g., grasslands to mountain forests, which is among the most unique and richest on a per area basis among the park systems in the Philippines. It is described as long mountain chain providing habitats for the numerous species of plants and animals adapted to various ecological niches.
The NSMNP is habitat to many endemic and rare species of plants. Among the endemic plants in the park are the various species of the dipterocarp family such as Shorea spp. and Hopea spp., various orchids such as Dendrobium aclinia, the leguminous tree, Milletia longipes and a member of the citrus family, Swinglea glutinosa. (Source: http://whc.unesco.org/)