UNITED STATES

UNITED STATES.

Pre-Columbian America Issue.
Grand Canyon.
Stamp issued on 12.10.1990.
Face value: 25 cents of United States dollar.
Printing: Photogravure.
Print: 151,000,000 copies.
Size: 40 x 25 mm.

Catalogs
- Michel No. 2111.
- Scott No. 2512.
- StampWorld No. 2246.
- Stanley Gibbons No. 2546.
- Yvert et Tellier No. 1923.

The Grand Canyon (Hopi: Öngtupqa; Yavapai: Wi:kaʼi:la; Navajo: Bidááʼ Haʼaztʼiʼ Tsékooh; Southern Paiute language: Paxa’uipi; Spanish: Gran Cañón or Gran Cañón del Colorado) is a steep-sided canyon carved by the Colorado River in Arizona. It is 446 km (277 mi) long, up to 29 km (18 mi) wide and attains a depth of over a mile (1,857 m or 6,093 ft). The canyon and adjacent rim are contained within Grand Canyon National Park, the Kaibab National Forest, Grand Canyon–Parashant National Monument, the Hualapai Indian Reservation, the Havasupai Indian Reservation and the Navajo Nation. The Grand Canyon is a river valley in the Colorado Plateau that exposes uplifted Proterozoic and Paleozoic strata. Between 100,000 and 3 million years ago, volcanic activity deposited ash and lava over the area which at times completely obstructed the river. These volcanic rocks are the youngest in the canyon. The first European known to have viewed the Grand Canyon was García López de Cárdenas from Spain, who arrived in 1540. James Ohio Pattie, along with a group of American trappers and mountain men, may have been the next European to reach the canyon, in 1826.