The quadripoint in the Southwestern United States where the states of Arizona, Colorado, New Mexico, and Utah meet
Designer
Navajo Nation
Bureau of Land Management
Type
Megalithic
Material
Granite and brass
Beginning date
1868
Completion date
1912
Opening date
1931
Website
Official website
"Here meet in freedom under God four states"
The Four Corners Monument marks the quadripoint in the Southwestern United States where the states of Arizona, Colorado, New Mexico, and Utah meet. It is the only point in the United States shared by four states, leading to the area being named the Four Corners region.[2] The monument also marks the boundary between two semi-autonomous Native American governments, the Navajo Nation, which maintains the monument as a tourist attraction, and the Ute Mountain Ute Tribe Reservation.
The origins of the state boundaries marked by the monument occurred just prior to, and during, the American Civil War, when the United States Congress acted to form governments in the area to combat the spread of slavery to the region. When the early territories were formed, their boundaries were designated along meridian and parallel lines. Beginning in the 1860s, these lines were surveyed and marked. These early surveys included some errors, but even so, the markers placed became the legal boundaries, superseding the written descriptions of geographical meridians and parallels. This includes the Four Corners Monument, which has been legally established as the corner of the four states.
^"Shared Solution: Four Corners". NGS Survey Monument Data Sheet. United States National Geodetic Survey. July 7, 2010. Retrieved May 27, 2023.
^"Explore Four Corners". Canyonlands eSolutions. Archived from the original on March 5, 2009. Retrieved March 10, 2009.
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