Sunday, September 27, 2026

Question: After the Grand Canyon, what is the second largest geologic feature in Arizona?

Answer: The Mogollon Rim is one of the longest escarpments on Earth; extending for over 200 miles across central Arizona and reaching a height of 2,000 feet, this imposing line of cliffs—after the Grand Canyon—is the second largest geologic feature in the state. It is of great geologic, biologic, hydrologic, and climatic significance. The Rim is a geologic boundary between the Colorado Plateau to the north and the Transition Ranges of central Arizona to the south.