Antarctica's total land area is 13.88 million km² (5.36 million mi²)—the fifth-largest continent after Asia, Africa, North America, and South America.
~98% is covered by ice sheet (avg. 2.16 km thick). Ice-free areas: coastal oases, Dry Valleys, nunataks. The Antarctic Treaty (1959) freezes territorial claims and dedicates the continent to peace and science.