The Grande Ronde Valley measures approximately 15 miles east to west by 20 miles north to south. This is the largest completely enclosed circular valley in the world. It is rimmed by the Blue and Wallowa Mountains. Our farmers grow wheat, alfalfa, canola, mint, rye, barley, and peas among other things. The valley is surrounded by forested mountains which rise anywhere from 1,000 to 4,500 feet above the valley floor.