In the shadow of the iconic volcanic monolith of Finger Rock in southern Routt County sits a wooden barn and granary that was added to the Routt County Register of Historic Places on June 23. The Yampa Ranch Historic Barn and Granary is a rare surviving example of agricultural construction in the Yampa Valley, according to the local nonprofit Historic Routt County. Property owner Matt Tredway, who bought the property about six years ago, worked …