Y Mountain is a mountain located directly east of Brigham Young University (BYU) in Provo, Utah, United States. The Slide Canyon, or Y Mountain Trail, leads to a large block Y located 1.06 miles (1.71 km) from a parking area at the mountain's base with an elevation gain of 1,074 feet (327 m). This hillside letter was built over a hundred years ago as the insignia for BYU. For years the trail to the Y has been one of the most hiked trails in Utah Valley and provides a scenic view of Provo and Orem, the rest of the many cities in Utah Valley and Utah Lake. The trail is also regularly used by hikers, bikers, paragliders and hunters to access the backcountry in the Slide Canyon area.

Sentinel Peak is a 2,897 ft (900 m) peak in the Tucson Mountains southwest of downtown Tucson, Arizona, United States. The valley's first inhabitants grew crops at the mountain's base, along the Santa Cruz River. The name "Tucson" is derived from the O'odham Cuk Ṣon, meaning "[at the] base of the black [hill]". In the 1910s, University of Arizona students used local basalt rock to construct a 160 ft (50 m) 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.