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| Negros Mountain Range | |
|---|---|
| Name | Negros Mountain Range |
| Country | Philippines |
| Region | Western Visayas |
| Highest | Mt. Kanlaon |
| Elevation m | 2435 |
Negros Mountain Range is a volcanic and volcanic-fracture mountain complex occupying the central spine of the island of Negros in the Visayas region of the Philippines. The range contains the active stratovolcano Mount Kanlaon, a mosaic of forested peaks, crater lakes, and steep river valleys that shape the island's drainage into the Sulu Sea, Tañon Strait, and Tanon Strait. Its topography, geology, and biota have influenced colonial-era routes, Philippine Revolution activities, and contemporary conservation policies administered by agencies such as the Department of Environment and Natural Resources.
The range extends roughly north–south along Negros Island, dominating the territories of provinces Negros Occidental and Negros Oriental and influencing the coastal cities of Bacolod, Dumaguete, Talisay, and Sagay. Peaks include Mount Kanlaon (the highest), Mount Silay, Mount Mandalagan, and the ridge complexes near Tablas, which form watersheds for rivers such as the Hagayhay River, Bago River, and Bais River. The mountain front interfaces with maritime corridors like the Tañon Strait and bay systems including Guimaras Strait, creating ecological linkages with islands such as Guimaras and Siquijor. Transportation corridors such as the Philippine National Railways-era road and modern highways follow the lowland skirts, connecting inland towns like La Castellana and San Carlos with ports at Pulupandan and Dumaguete City.
The range sits on the Philippine Mobile Belt and is dominated by volcanic edifices related to the subduction of the Philippine Sea Plate beneath the Eurasian Plate at the Philippine Trench system. Stratigraphy records include andesitic to basaltic lava flows, pyroclastic deposits, and intrusive bodies associated with eruptions of Mount Kanlaon, Mount Mandalagan, and other centers active in the Quaternary. Tectonic structures relate to the Negros Trench and regional faulting that also shaped the adjacent Mindoro–Panay Collision Zone. Petrological studies reference minerals common to island-arc volcanism observed in samples studied by institutions such as the Philippine Institute of Volcanology and Seismology and the UP National Institute of Geological Sciences.
The montane and lowland forests harbor endemic and threatened taxa including the Philippine tarsier (southern populations), the Negros bleeding-heart, and endemic plants recorded by botanists from the National Museum of the Philippines and the University of the Philippines Los Baños. Vegetation zones range from lowland dipterocarp forest to mossy cloud forest on higher slopes, supporting assemblages similar to those on Panay and Samar. Faunal lists include raptors observed near Mount Kanlaon such as the Philippine eagle-owl and migratory species recorded via surveys by BirdLife International. Freshwater habitats host endemic cyprinids and freshwater shrimps monitored by researchers at Silliman University and the Central Philippine University.
Climatic regimes are influenced by the Northeast Monsoon and Southwest Monsoon, producing orographic rainfall that feeds perennial rivers and upland springs supplying municipal water systems for Bacolod and Dumaguete. The range creates a rain shadow affecting western lowlands and contributes to flood pulses in coastal plains during typhoon season events catalogued by the Philippine Atmospheric, Geophysical and Astronomical Services Administration. High-elevation sites host cloud condensation that supports montane peat and regulates baseflows for irrigation in sugarcane-producing valleys such as those around La Carlota and Talisay City.
Indigenous Negrense communities, including groups recorded in ethnographies by the National Commission for Culture and the Arts, have long-standing cultural ties to upland landscapes and sacred peaks like Mount Kanlaon. Spanish colonial settlement patterns concentrated haciendas and sugarcane plantations in the lowlands while uplands provided timber and cave resources exploited during periods of conflict such as the Philippine Revolution and the Japanese occupation of the Philippines (1942–1945). Cultural landmarks include pilgrimage routes used by devotees associated with Nuestra Señora de la Candelaria festivals and historic haciendas preserved as heritage sites in municipalities like Silay City and Talisay.
The range underpins regional economies through water provision for sugar industry mills around Bacolod, agroforestry on foothills producing crops sold in markets of Iloilo City and Cebu, and geothermal prospects explored by Energy Development Corporation and the Department of Energy. Timber extraction, quarrying for construction aggregates, and small-scale mining have occurred in concessions regulated by local provincial governments and national agencies such as the Mines and Geosciences Bureau. Ecotourism enterprises around Mount Kanlaon National Park and trail systems attract visitors from Metro Manila, Cebu City, and international tourists, generating income for guides and community cooperatives registered with the Department of Trade and Industry.
Significant portions of the range are within Mount Kanlaon Natural Park, an area designated under the National Integrated Protected Areas System and managed with involvement from the Protected Areas and Wildlife Bureau. Conservation efforts target critically endangered species documented by the IUCN and address threats including deforestation, agricultural encroachment, and invasive species. Collaborative initiatives include community-based forest management agreements with local barangays, biodiversity inventories by universities such as Ateneo de Davao University, and funding mechanisms linked to international donors and national environmental legislation administered through the Environmental Management Bureau. Ongoing research priorities emphasize connectivity with neighboring protected seascapes like the Tañon Strait Protected Seascape and restoration of degraded watershed zones serving urban populations.
Category:Mountain ranges of the Philippines Category:Landforms of Negros Occidental Category:Landforms of Negros Oriental