An Ancient Sea / Glacial Meltwater Trench

Historical marker location:

5981 Walt Hjelle Pkwy, Fort Ransom, North Dakota

( Marker is on 119th Avenue SE north of Mill Road, on the left when traveling north.)

North Dakota played a significant role in the development of the U.S. space program. During the 1950s and 1960s, the state was home to several missile bases and launch sites that were used to test and develop intercontinental ballistic missiles.