Archaeologists have found a stone wall in an Italian forest that the Roman army used during its standoff with legendary gladiator Spartacus, who led a slave revolt against Rome over 2,000 years ago.

The mossy wall is located in the Dossone della Melia forest in Calabria, a region in the “toe” of Italy’s boot, according to a statement from the Archaeological Institute of America. A team led by Paolo Visonà, an archaeologist at the University of Kentucky, found that the thin stone mound was over 1.7 miles long, and it once ran alongside a deep military ditch.