176 miles
152 miles
The Grand Canyon was made a natural monument when the settlers discovered it, which was in 1884.
Grand Canyon-Parashant National Monument was created in 2000.
The Grand Canyon is largely contained within the Grand Canyon National Park, one of the first national parks in the United States. There is a Grand Canyon-Parashant National Monument located on the northern edge of the Grand Canyon National Park. This Monument is co-managed by the National Park Service and the Bureau of Land Management.
Grand Canyon
It is a Canyon as in the Grand Canyon.
It isn't a monument, but a national park. A monument is something made by man, but the Grand Canyon is natural by nature.
Death valley(eastern california),Grand canyon(Arizona state of US)
It is a Canyon as in the Grand Canyon.
The Grand Canyon is in Arizona.
A deep valley could be called a canyon, such as the Grand Canyon.
The Grand Canyon was creatd by water and is the largest valley on earth in Arizona.