Here are some other terms you might see used:

* Gorge: A deep, narrow valley with steep sides, often formed by a river.

* Canyon: A deep, narrow valley with steep sides, usually formed by erosion from a river.

* Cove: A small, sheltered valley or inlet.

* Hollow: A small, enclosed valley or depression.

The specific term used will depend on the size, shape, and formation of the valley.