The area of Rocks State Park is 3,581,467.933824 square meters.
The area of Medicine Rocks State Park is 1,335,462.6193920001 square meters.
The area of Palmerston Rocks National Park is 100,000.0 square meters.
The area of Chain Lakes Provincial Park is 4,400,000.0 square meters.
Chain of Rocks Bridge was created in 1929.
New Chain of Rocks Bridge was created in 1966.
Earth's crust, same type of rocks,, shield and major area :)
Elephant Rocks State Park was created in 1967.
Mimosa Rocks National Park was created in 1973.
Medicine Rocks State Park was created in 1957.
Massacre Rocks State Park was created in 1967.
City of Rocks State Park was created in 1953.