This series of hills begins southwest of Olympia; the highest hill is 760 feet high. They extend for several miles into the Capitol State Forest. When the application for a post office, to serve the Mason County Logging Company and the Mumby Lumber and Shingle Company operations, was submitted to the post office department, the name Black Hills was proposed. The post office was eventually named Bordeaux for Thomas and Joseph Bordeaux, who began logging operations in there in 1887.