National Park Service U.S. Department of the Interior

War of 1812 Preserving Earthworks


Image of earthwork at Fort McHenry


Earthworks place a barrier between an army and its enemy, and in their most basic form consist of a protective embankment or mound of earth called a parapet and a ditch that supplies the earth to build the parapet.

Earthworks surviving in today’s landscape range from low, eroded mounds to massive well-preserved forms with clearly articulated features. Erosion, the process whereby particles of soil dislodge from earthworks and are transported away, poses the greatest threat to their longevity.

The National Park Service and private owners manags military earthworks at numerous locations with surviving examples from the War of 1812.

Sustainable Earthworks Management

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