State archaeologist Mike Moore told The Tennessean fire pits and broken pieces of ceramic pans were uncovered at Sulphur Dell. They suggest that the area once held a large workshop where mineral water was boiled to collect salt, a valuable trading commodity.
Moore said this is the first discovery of its kind in the region.
Archaeologist Kevin Smith is director of anthropology at Middle Tennessee State University. He said enough material was excavated to fuel one or two years of research.
The new Nashville Sounds ballpark will be built over archeological site, but not in a way that will damage any remaining artifacts.