Then men were walking up the river bed to them.

This room was almost on a level with the river bed.

However, foundation stone can be seen in the river bed.

This section of the river bed may be dry in summer.

Why not just use the dry river bed as an access?

A large area, which is now part of the farm, was once the river bed.

Was there a lot of mud on the river bed?

The Chinese attack, which was expected, came through a dry river bed.

The light rain increased, and I led the way out of the river bed.

The other side of the river bed lay some distance away.