The Panamint Valley and too the left the end of the Rainbow Canyon, viewed from near the Father Crowley Overlook. The Valley is a long basin located east of the Argus and Slate ranges, and west of the Panamint Range in the northeastern reach of the Mojave Desert, in eastern California, United States. The northern end of the valley is in Death Valley National Park and Inyo County, California. The valley lies in a north–south direction, and stretches from the Panamint Dunes in the north to the Naval Air Weapons Station China Lake in San Bernardino County in the south. The valley is approximately 65 miles (105 km) in length, and is more than 10 miles (16 km) wide in the Hall Canyon area.