Climate:
mostly arid or semiarid, subtropical along Caspian coast
Terrain:
rugged, mountainous rim; high, central basin with deserts, mountains; small, discontinuous plains along both coasts
Elevation extremes:
lowest point: Caspian Sea -28 m highest point: Kuh-e Damavand 5,671 m
Natural resources:
petroleum, natural gas, coal, chromium, copper, iron ore, lead, manganese, zinc, sulfur
Land use:
arable land: 9.78% permanent crops: 1.29% other: 88.93% (2005)