Moki is the name that early Spanish Explorers gave to the indigenous Pueblo Indians that inhabited the region. The dugway, (gravel road) is cut into a nearly vertical 1,100' cliff that travels 3 miles at an 11° grade. It was constructed in 1958 by Texas Zinc, a mining company, to transport uranium ore from the "Happy Jack" mine in Fry Canyon, UT. to the processing mill in Mexican Hat.