Strath

[T]hoſe fair Straths that vvater’d are / VVith Tay and Tvveed’s ſmooth Streams, / VVhich gentily and daintily / Eat dovvn the flovvry Braes; / As greatly and quietly / They vvimple to the Seas.

Source: wiktionary

[T]he other stream, which had its source among the mountains on the left hand of the strath, seemed to issue from a very narrow and dark opening betwixt two large rocks.

Source: wiktionary

The place of exit from the hills of one or other of the Punjab rivers could generally be pointed out to me; the straths and gorges that opened upon the plains would often afford a peep into the interior of the mountains, and the snowy ranges would be seen at the end of them.

Source: wiktionary

Agatha and Inga rode their horses with style across the strath.

Source: wiktionary