A Dufur woman died in a one-vehicle accident Tuesday morning on Highway 197 north of Tygh Valley.  According to the Oregon State Police, a preliminary investigation found the SUV driven by 51-year-old Barbara Hunt was traveling north on Highway 197 near milepost 29 when for unknown reasons the vehicle left the roadway shoulder and hit a rock wall.  The OSP says Hunt sustained fatal injuries and was pronounced dead at the scene.  The accident occurred at around 10:45 a.m. Tuesday.  The OSP was assisted by the Wasco County Sheriff’s Office, Tygh Valley Fire Department, Juniper Flat Rural Fire Department, and the Oregon Department of Transportation.