within Zion National Park's 229 square miles (593.1 km) is a spectacular
cliff-and-canyon landscape and wilderness full of the unexpected
including the world's largest arch - Kolob Arch - with a span that
measures 310 feet (94.5 m). Wildlife
such as mule deer, golden eagles, and mountain lions, also inhabit
the Park. Mukuntuweap National Monument proclaimed July 31, 1909;
incorporated in Zion National Monument, Utah March 18, 1918; established
as a national park on Nov. 19, 1919.