3 adjectives to describe gulley

The X Bar X boys in the haunted gulley.

Across the Plateau from north to south ran the Val d'Assa, which near the southern edge, having become only a narrow gulley, turned away westwards, the Assa stream flowing finally into the river Astico.

Where the Val d'Assa turned west, our front line ran on one side of the shallow gulley and the Austrian on the other.

3 adjectives to describe  gulley