Rawan Cascade yana nufin jerin tsaunuka a yammacin Arewacin Amurka wanda ya tashi daga British Columbia, Kanada, zuwa Jihar Washington, Oregon, zuwa arewacin California. Yana da jerin kololuwar tsaunuka, ciki har da Dutsen Rainier, Dutsen Hood, Dutsen St. Helens, da Dutsen Shasta, da sauransu. Yankin ya kuma kasance gida ga dazuzzuka, tafkuna, da koguna masu yawa, kuma shine muhimmin tushen ruwa, katako, da nishaɗi ga yankin.