Read the passage and answer the questions.

The Grand Canyon, located in northwestern Arizona, is one of the world's most dazzling sites. Carved over millions of years by the Colorado River, the Grand Canyon is 277 miles long, and between four and eighteen miles wide. In some places, the canyon is more than one mile deep. It is one of the world’s most photographed places and has been captured on countless photographs, posters, and post cards. Millions of people visit it each year.   


The Grand Canyon was first discovered by explorers searching for the fabled Seven Cities of Cibola in an expedition led by Spanish explorer Francisco Vasquez de Coronado in 1540.