Land boundaries: total: 2,830 km border countries: East Timor 228 km,
Malaysia 1,782 km, Papua New Guinea 820 km
Coastline: 54,716 km
Maritime claims: measured from claimed archipelagic baselines exclusive economic zone: Climate: tropical; hot, humid; more moderate in highlands
Terrain: mostly coastal lowlands; larger islands have interior mountains
Elevation extremes: lowest point: Indian Ocean 0 m highest point:
Puncak Jaya 5,030 m
Natural resources: petroleum, tin, natural gas, nickel, timber, bauxite, copper, fertile soils, coal, gold, silver
Land use: arable land: 10% permanent crops: 7% other: 83% (1998 est.)
Irrigated land: 48,150 sq km (1998 est.)
Natural hazards: occasional floods, severe droughts, tsunamis, earthquakes, volcanoes, forest fires
Environment - current issues: deforestation; water pollution from industrial wastes, sewage; air pollution in urban areas; smoke and haze from forest fires