
Sumas sits at the international border of Washington and British Columbia, serving as a critical rail and road gateway in the mid-20th century. The landscape is defined by the broad valley of the Nooksack River and Sumas River, bounded to the east by the rising slopes of Sumas Mountain. A complex network of historic rail lines, including the Chicago Milwaukee St Paul and Pacific and the Northern Pacific, crisscrosses the lowlands, connecting agricultural hubs like Everson and Nooksack.
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