Sourdough Mtn via South Ridge + Sourdough Trail Traverse + Sourdough Lookout (Stetattle Mountains, WA) Jim Brisbine·September 16, 2007Trip Date: September 15-16, 2007 Sourdough Mountain Climbing Trip & Sourdough Trail Traverse: Gorge Lake to Ross Lake...Lookout SitesNorthwestern WA CascadesStetattle MountainsTraverses & Loops (Trail)Sourdough Mtn·86 views