The tracks of the Cog Railway and its associated buildings lie up the slope of Mount Washington, in nearby Thompson and Meserve's Purchase. The Base Road from Bretton Woods and Fabyan's is the preferred route to the lower end of the tracks (the Base Station of the Cog), except in those winters when the Mount Clinton Road is instead the only plowed road to their intersection. (The closing of the lower end of the Base Road had been traditional into 2004.) The Cog was operated during the winter seasons of 2004 to 2006 to take wilderness skiers partway up the mountain.