"A landform is a natural or artificial feature of the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, ...
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and their arrangement in the landscape is known as topography. Landforms include hills, mountains, plateaus, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas,[citation needed] including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins." - (en.wikipedia.org 23.12.2021)
