its called a basin
a basin
the great basin
high land
Chad Basin
A basin is a lower area surrounded by higher land. This particular basin can be found in south america, primarily Brazil.
A valley is a lower area of land that is typically surrounded by mountains or hills. Valleys are usually formed by rivers or glaciers carving out the land over time. They often provide fertile land suitable for agriculture.
Basin
A Valley-------------------------No a valley is not surrounded by higher land, the correct answer is a "basin" or a "depression".
Chad Basin.-by Anurag Kamboj
A basin landform
Basin that is the answer