A Valley
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No a valley is not surrounded by higher land, the correct answer is a "basin" or a "depression".
A low area surrounded by higher land is called a basin. The areas are usually bowl shaped and are completely surrounded.
Rivers are always surrounded by higher land.
its called a basin
a valley
Basin
a basin
Tall grass is a marsh and if there are trees it is a swamp.
Land that is nearly surrounded by water is called a peninsula.
Basin that is the answer
Basin that is the answer
Land surrounded by water is an island. There are similar land forms such as peninsulas that are not totally surrounded, but connected to the mainland.
An island is a piece of land entirely surrounded by water.