The Grand Canyon is one of the Seven Wonders of the World. It is a massive canyon of red rock that lies in northern Arizona. The Grand Canyon is over 277 miles long and over 1 mile deep. It is 18 miles wide and getting wider. Colorado River runs at the bottom of the Grand Canyon. The Grand Canyon was made by the Colorado River. The river ran through this area for 2 billion years. It carved the rock into a canyon.