Mogollon Rim

The Mogollon Rim (/mʌɡᵻˈjoʊn/ or /moʊɡəˈjoʊn/) or /mɒɡɒdʒɔːn/) is a topographical and geological feature cutting across the U.S. state of Arizona. It extends approximately 200 miles (320 km), starting in northern Yavapai County and running eastward, ending near the border with New Mexico. It forms the southern edge of the Colorado Plateau in Arizona.

The Rim is an escarpment defining the southwestern edge of the Colorado Plateau. Its central and most spectacular portions are characterized by high cliffs of limestone and sandstone, namely the Kaibab Limestone and Coconino Sandstone cliffs. The escarpment was created by erosion and faulting, cutting dramatic canyons into it, including Fossil Creek Canyon and Pine Canyon. The name Mogollon comes from Don Juan Ignacio Flores Mogollón, the Spanish Governor of New Mexico from 1712 to 1715.