through the Angat–Umiray trans-basin tunnel which runs for from Umiray River on the eastern side of Sierra Madre in General Nakar. The reserve is home to an indigenous population known as Dumagat tribe which inhabit twelve sitios in the villages of San Mateo, San Lorenzo and San Isidro in Norzagaray, and Kabayunan in Doña Remedios Trinidad. In December 2014, the National Power Corporation inaugurated the Angat Rainforest and Ecological Park within the reserve in Sitio Bitbit, San Lorenzo, Norzagaray. It offers many different opportunities for nature and outdoors enthusiasts including the hilltop view deck, ecological center, and the Tarictic fun trail. A museum of natural history is also planned for the park, as well as a Dumagat cultural heritage site, seedling propagation, rattan gene bank and a bambusetum. The Upper Marikina River Basin Protected Landscape borders Angat Watershed on the south, while on the north, it is also contiguous with the Doña Remedios–General Tinio Watershed Forest Reserve. It is also bordered by the Biak-na-Bato National Park and Minalungao National Park on the west and northwest. It is accessible from Manila via Quirino Highway, Del Monte–Norzagaray Road and Bigti–San Mateo Road in Norzagaray. Biodiversity The Angat Watershed supports a variety of wildlife thanks to its location in the Sierra Madre and its rich hydrology and terrestrial ecology coated by lowland dipterocarp forests, submontane forests, grasslands, secondary bamboo and scrublands. It is home to 290 endemic species of woody and non-woody plants, including the white lauan (known locally as bagtikan), tanguile, yakal, acacia and narra. A good area for bird-watching, the Angat reserve attracts 43 different bird species, many of which are threatened or restricted. In addition to the two most visible birds in the reserve, the Luzon hornbill (known locally as kalao) and the Rufous hornbill, the reserve also attracts large flocks of spotted imperial pigeon, scale-feathered malkoha, rough-crested malkoha, grey-backed tailorbird, and Philippine eagle owl. These avian species are all endemic to the Philippines, with the Luzon hornbill and Philippine eagle-owl classified as near-threatened and vulnerable. The data-deficient Worcester's buttonquail has also been recorded in the watershed, as well as the Philippine hawk-eagle, Philippine dwarf kingfisher, green racket-tail, whiskered pitta, celestial monarch, ashy thrush, ashy-breasted flycatcher, flame-breasted fruit dove, and green-faced parrotfinch. Two near-threatened mammals are known to roam the watershed forest at Angat, the crab-eating macaque and the Philippine warty pig. It is also a known habitat of the