Identifying Man-Made Landforms with LiDAR
Any significant disturbance in the ground surface can be seen with high-resolution LiDAR data. A recent geologic mapping project for the Petersburg National Battlefield completed by DGMR used 1-meter LiDAR data to identify Civil War earthworks, trenches, and fort structures that can be difficult to see with aerial photography, or even by walking the landscape on foot!
Civil War Fort
The even lines in the image below represent plowing for a tree farm in Chesterfield County. Farming and earth excavation often leave traces that clearly visable on bare-earth LIDAR.
Tree farm in Chesterfield County, Virginia
This beautiful flower shape is actually five baseball fields surrounding an athletic complex in Newport News. If you look carefully, you can even pick out the pitcher’s mounds!
Athletic Complex Newport News, Virginia
Bertha and Edith placer gold mine, Fluvanna County, Virginia