a deep narrow depression in the earths surface, often having a river running through it

a narrow passage of water connecting two larger bodies of water

an enlongated lowland between mountians, hills, or other uplands

a narrow strip of land, with water on both sides, that connects two larger land masses

either a group of islands or a body of water that has many islands in it

a point of land extending into the sea; it is usually smaller than a peninsula

a broad expanse of generally high and flat land, also called a tableland

elevated flat land

the triangular-shaped land at the mouth of some large rivers