Since you gave us the clue "once great mule deer country" I would have to say Wyoming or Idaho. Because of the picture with the deep canyon I would say that somebody nailed it as Hells Canyon. Just guessing. fatrooster.
i guess that one was to easy. it is where the southern tip of the seven devils in idaho breaks off into hells canyon, deep creek and oxbow creek, unit 22.
hopefully now that its a draw unit, it will be great mule deer country once again. that was one move Idaho F&G made that really made sense and is a step in the right direction for the mule deer herd. albeit...it was spelled out for them in hatfields book, at least they listened...