The Four Corners Monument is situated on a raised plain known as the Colorado Plateau, which is largely made up of sandstone and shale. The monument itself was constructed out of concrete and reinforced with bronze plates and steel posts.
The Four Corners Monument was first established in 1912, when the four states agreed to create a boundary marker for the area. The marker was constructed with sandstone and placed at an elevation of 5000 feet above sea level In 1922, two markers were added - one for the state's corner - and the monument was officially dedicated.
The area surrounding the Four Corners Monument is home to a wide variety of wildlife, including bighorn sheep, mule deer, elk, mountain lions, and black bears. The Hovenweep National Monument also has an impressive array of birds that can be seen in the area.