Petroglyph National Monument was created in 1990.
The area of Hovenweep National Monument is 3,172,735.4351616 square meters.
No. It is completely within the sovereign territory of the Navajo Nation, and thus outside the jurisdiction of the federal government. As such, it can not become part of the National Park System. It is instead a Navajo Tribal Park.
Navajo National Monument.
Soldiers' National Monument was created in 1869.
Cabrillo National Monument was created in 1913.
Mukuntuweap National Monument was created in 1909.
Dinosaur National Monument was created in 1915.
Bandelier National Monument was created in 1916.
Wupatki National Monument was created in 1924.
National Monument of Scotland was created in 1829.
Tumacacori National Monument was created in 1908.
Sitka National Monument was created in 1910.