The Four Corners is the place in the Southwestern United States where the four corners of New Mexico, Colorado, Utah, and Arizona meet. Three of the four corners (AZ, NM, UT) are on the Navajo Indian Reservation and the fourth corner (CO) is on the Ute Mountain Indian Reservation.
The Four Corners Monument is at the coordinates ..
- "Four Corners PID AD9256" (text file). NGS Survey Monument Data Sheet. United States National Geodetic Survey. 2003-05-07. http://www.ngs.noaa.gov/cgi-bin/ds_mark.prl?PidBox=AD9256. Retrieved 2007-01-15.
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