The Inyo Mountains are a short mountain range east of the Sierra Nevada in eastern California in the United States. The range separates the Owens Valley to the west from Saline Valley to the east, extending for approximately 70 miles south-southeast from the southern end of the White Mountains, from which they are separated by Westgard Pass, t…The Inyo Mountains are a short mountain range east of the Sierra Nevada in eastern California in the United States. The range separates the Owens Valley to the west from Saline Valley to the east, extending for approximately 70 miles south-southeast from the southern end of the White Mountains, from which they are separated by Westgard Pass, to the east of Owens Lake.