Battery Carroll and Fort Greble
Battery Carroll and Fort Greble were two defense sites north of the Potomac that guarded the gateway to Washington during the Civil War. Their guns not only swept the Potomac opposite Alexandria, standing ready to prevent attack on the Washington Arsenal and Navy Yard, but also the ravines of Oxon Run giving access to the roads leading to Washington.
When Congress ordered the closing of the defenses, Fort Greble was offered to Thomas W. Berry who held the property in trust for heirs "unknown."
Did You Know?
During the Cretaceous Period, 120 million years ago, the Fort Foote property was swamp land, much different from today. Warm adapted plants such as Brachyphyllum crassicarde lived in this habitat (fossil photo to the right). As the climate began to change, this plant as well as many others died out.