Sentinel Peak

Sentinel Peak is a 2,897 feet (883 meters) peak in the Tucson Mountains southwest of downtown Tucson, Arizona. In the 1910s University of Arizona students used local basalt rock to construct a 160-feet-tall block "A" on the mountain's east face, near its summit, giving the peak its other name, "A" Mountain. The peak is part of a 272-acre park, the largest natural resource park in the City of Tucson.