The Boundary Country comprises the lower valleys of the West Kettle and Kettle Rivers and the lower Granby River. The Granby and Kettle converge just north of the border at Grand Forks, the largest city and heart of the Boundary. The Kettle crosses the border at the town of Midway, near the confluence of the Kettle and Boundary Creek, which flows out of the galena-rich Boundary Creek basin where the city of Greenwood is located. A small pass connects between the Kettle River basin and that of the Granby, where the town of Grand Forks lies immediately upon the border, and just east of which is the resort community of Christina Lake. The principal community of the West Boundary area is Rock Creek, which is located at the western end of the region where the creek of the same name meets the Kettle River.