ഭൂമിശാസ്ത്രം അനുസരിച്ച് പൊക്കംകൂടിയതും പരന്നു വിസ്തൃതവുമായ ഭൂപ്രദേശമാണ് പീഠഭൂമിPlateau.

In geology and physical geography, a plateau, also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised steeply above the surrounding area on both the side. Often one or more sides have deep hills or escarpments. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. A few plateaus may have a small flat top while others have wider ones.