Indonesia

tropical; hot, humid; more moderate in highlands

mostly coastal lowlands; larger islands have interior mountains

Southeastern Asia, archipelago between the Indian Ocean and the Pacific Ocean

54,716 km

67,220 sq km (2012)

Southeast Asia

occasional floods; severe droughts; tsunamis; earthquakes; volcanoes; forest fires volcanism: Indonesia contains the most volcanoes of any country in the world, with over 75 historically active; significant volcanic activity occurs on Java, Sumatra, the Sunda Islands, Halmahera Island, Sulawesi Island, Sangihe Island, and in the Banda Sea; Merapi (2,968 m), Indonesia's most active volcano, has been deemed a Decade Volcano by the International Association of Volcanology and Chemistry of the Earth's Interior, worthy of study due to its explosive history and close proximity to human populations; in 2018, a large explosion and flank collapse destroyed most of the island of Anak Krakatau (Child of Krakatau) and generated a deadly tsunami that left more than 400 dead; other notable historically active volcanoes include Agung, Awu, Karangetang, Krakatau (Krakatoa), Makian, Raung, Sinabung, and Tambora; see note 2 under "Geography - note"

note 1: 13,466 islands are in the archipelago, of which 922 are permanently inhabited; Indonesia is the world's largest country composed solely of islands; the country straddles the equator and occupies a strategic location along major sea lanes from the Indian Ocean to the Pacific Ocean note 2: Indonesia is one of the countries along the Ring of Fire, which is a belt bordering the Pacific Ocean that contains about 75% of the world's volcanoes, up to 90% of the world's earthquakes, and 80% of tsunamis note 3: despite having the fourth largest population in the world, Indonesia is the most heavily forested region on earth after the Amazon

petroleum, tin, natural gas, nickel, timber, bauxite, copper, fertile soils, coal, gold, silver

note: Indonesia is the World's leading producer of nickel with an output of 1.6 million mt in 2022

slightly less than three times the size of Texas

5 00 S, 120 00 E

major concentration on the island of Java, which is considered one of the most densely populated places on earth; of the outer islands, Sumatra contains some of the most significant clusters, particularly in the south near the Selat Sunda and along the northeastern coast near Medan; the cities of Makasar (Sulawesi), Banjarmasin (Kalimantan) are also heavily populated

Sepik (shared with Papua New Guinea [s]) - 1,126 km; Fly (shared with Papua New Guinea [s]) - 1,050 km note: [s] after country name indicates river source; [m] after country name indicates river mouth