" Dusk settled down into this neck of the great valley. Coyotes barked out in the open. From the heights pealed down the mournful blood-curdling, yet beautiful, bay of a wolf. The rosy afterglow of sunset lingered a long time. The place was shut in, closed about by brushy steeps, redolent of sage. A tiny stream of swift water sang faintly down over rocks. And before darkness had time to enfold hollow and slope and horizon, the moon slid up to defeat the encroaching night and blanch the hills with silvery light. "

― Zane Grey , Valley of Wild Horses