The Land of the Sun, also known as the Burnt Land of the Sun, Easterness, Eastland, and Eastern Land, was a continent in the far east of Arda that corresponded symmetrically to Aman in the far west. The land was separated from Middle-earth by the waters of the East Sea. In the Land of the Sun was a great, curve-shaped mountain range called the Walls of the Sun.
The Land of the Sun likely comprised all or part of the Empty Lands that Ilúvatar "cast back" during the Downfall of Númenor.