The Drift Fence by Zane Grey

The day came when Jim Traft had his first look at the country from the rim of the Diamond.

It was from the western promontory under which the Cibeque curled like a winding snake. The rest was endless green, relieved by bare spots and gray specks, which were the homesteads of the inhabitants. West Fork lay almost under the rim, a few cabins and fields, a gray line of road between some houses. Far to the south the dense forest began to lose its grip and showed bare grass flats and ridges. Westward the slopes ran up in long slants, like the ribs of a washboard, ending in a craggy mountain range.