The earthen fortifications near Charleston, S.C., some up to 12 feet high and as wide as a football field, offer a unique opportunity to study the decay of large earthen constructions, because very detailed measurements are available from the war's end in 1865, said University of Cincinnati doctoral geology student Reuben Bullard Jr.
Bullard, who also has studied archaeology, said the earthworks are becoming more rounded at the crest and base but are leveling by about a fifth of an inch each year. The slopes are becoming more gentle, and subtle features are diminishing.
The effects of climate, weather, ocean currents, plant growth and human activity on the manmade hillsides can offer a baseline for preserving other archaeological sites, he said.
The findings will be shared with the Charleston Museum and the South Carolina Battleground Preservation Trust, two organizations that hope to safeguard the structures.
via The Pawtucket Times