The "river" is actually a large trough made to look like a natural river bed.

Divided into pairs, each pair was carrying a large trough made of some odd, lumpy wood which Belisarius had never seen before.

A large trough located off the west coast of California turned the hurricane to the north-northwest, and later to the north.

The larger trough slowly became elongated in a northeast-southwest manner late on September 7.

A large trough moved in from the west and formed a low.

At first glance it is a pasta lover's dream: four dishes presented in a large trough.

A few small hardwood trees were evident in the largest troughs.

It's more of a large trough or valley running northeast to southwest, with a number of tributaries.

By early on June 21, a large extratropical trough spawned a low pressure area, which resulted in baroclinic activity.

Between the keep and the sea was a broad open area where men walked barrels to and from large troughs surrounded by women.