Dechutes Picture Jasper was mined east of Biggs Junction, Oregon, near the Deschutes River. Now located in a State Park with most of the remaining material trapped under the highway. It's pretty certain Dechutes jasper will never be mined again. There were similar jasper deposits near Rufus, Or. and Biggs Junction, Or. Most people group these jasper's under the term "Biggs Jasper". Over all the Dechutes seems to have tighter darker patterns than some of the other locations. However sometimes materials from any of the locations could be too close to tell.