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.
Carrizo National Monument was created in 2001.
Pinnacles National Monument was created in 1908.
Tumacacori National Monument was created in 1908.
Wupatki National Monument was created in 1924.
Mukuntuweap National Monument was created in 1909.
Soldiers' National Monument was created in 1869.
Biscayne National Monument was created in 1968.
Wheeler National Monument was created in 1908.
Noatak National Monument was created in 1978.