Geography
The Philippines is an archipelago of 7,107 islands with a total land area of 300,000 sq km. It lies between 116° 40' and 126° 34' E. longitude, and 4° 40' and 21° 10' N. latitude, and borders the Philippine Sea on the east, on the South China Sea the west, and the Celebes Sea on the south. The island of Borneo lies a few hundred kilometres southwest and Taiwan directly north. The Moluccas and Sulawesi are to the south, and Palau is to the east beyond the Philippine Sea.
The islands are divided into three groups: Luzon, Visayas, and Mindanao. The Luzon islands include Luzon itself, Mindoro, Marinduque, Masbate and Batanes Islands. The Visayas is the group of islands in the central Philippines, the largest of which are: Palawan, Panay, Negros, Cebu, Bohol, Leyte and Samar. The Mindanao islands include Mindanao itself, plus the Sulu Archipelago, composed primarily of Basilan, Sulu and Tawi-Tawi.
The 11 largest islands contain 94% of the total land area. The largest of these islands is Luzon at about 105,000 sq km. The next largest island is Mindanao at about 94,600 sq km. The busy port of Manila, on Luzon, is the national capital and second largest city after its suburb Quezon City.
Physical Geography
The Philippines is part of a western Pacific arc system that is characterised by active volcanoes. Among the most notable peaks are Mount Mayon near Legazpi City, Taal Volcano south of Manila, and Mount Apo on Mindanao. All of the Philippine islands are prone to earthquakes.
The northern Luzon highlands, or Cordillera Central, rise to between 2,500 and 2,750 metres, and, together with the Sierra Madre in the northeastern portion of Luzon and the mountains of Mindanao, boast rain forests that provide refuge for numerous upland tribal groups. The rain forests also offer prime habitat for more than 500 species of birds, including the Philippine eagle (or monkey-eating eagle), some 800 species of orchids and some 8,500 species of flowering plants.
The country's most extensive river systems are the Pulangi River, which flows into the Mindanao River (Rio Grande de Mindanao); the Agusan, in Mindanao which flows north into the Mindanao Sea; the Cagayan in northern Luzon; and the Pampanga, which flows south from east Central Luzon into Manila Bay. Laguna de Bay, east of Manila Bay, is the largest freshwater lake in the Philippines. Several rivers have been harnessed for hydroelectric power.