The Mogollon (pronounced
"muggy-own") Rim runs roughly across Arizona's midsection, from the northwest to
the middle of its eastern border with New Mexico.
It marks the edge of the Colorado Plateau, which is a huge area of relatively
flat-lying rock formations within northern Arizona, southern and eastern Utah,
southwestern Wyoming, and western Colorado.
Arizona's Grand Canyon is cut down into it, and its colorful rocks and
picturesque landscapes are famous throughout the world. Besides being relatively
undisturbed geologically, except for its rapid but gentle uplift, its elevation ranges
from 7000 feet (2300 meters) to over 10,000 feet (3200 meters).
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