The lake is sandwiched between the provinces of Maguindanao and Sultan Kudarat. The lake falls under the political jurisdiction of the municipalities of Buluan of Maguindanao and President Quirino and Lutayan in Sultan Kudarat. The lake actually consists of adjoining marshy basins of the Pulangi, Maanoy, Buluan, Alah rivers, which are all tributaries of the Mindanao River
The entire Allah Valley was declared a watershed forest reserve in 1985 through the signing of Proclamation No. 2455 by President Ferdinand Marcos. The 102,350-hectare (252,900-acre) protected area also includes Lake Sebu, the Tasaday-Manobo Special Forest Reserve, the Datu Ma Falen Civil Reservation, and the National Cultural Minorities Settlement Reservation located within the valley.
The placid lake of Lake Sebu can be found in Allah Valley near the municipality of Surallah, South Cotabato. Surrounded by rolling hills and mountains covered with thick rain forest, the lake has an area of 354 hectares, with an elevation of approximately 1,000 metres.
Sarangani Bay is a bay located on the southern tip of Mindanao in the Philippines. It opens up to the Celebes Sea on the Pacific Ocean. General Santos City, one of the Philippines most important cities and ports, is located at the head of the bay, making the bay one of the busiest and often the sight of shipping accidents. The province of Sarangani, created in 1992, is named after the bay.
The name Mount Matutum is derived from the local Blaa'n tongue "Amyak Maleh" meaning climb and plant. Indeed, all trekkers are required to plant a tree while visiting the Mountain. Rising to 2293 meters (7522 feet) above sea level, Mount Matutum prominently resides at the southern end of The Philippines southernmost province of Mindanao.