An ancient stone wall hidden in a forest in Italy was once used by Roman forces to corral slave-revolt leader and gladiator Spartacus and his men.
Archaeologists learned about the now-moss-coated wall, which stretches roughly 1.7 miles (2.7 kilometers) long, after a local environmental group tipped them off about the site in the Dossone della Melia forest in Calabria, a region in southern Italy, according to the Archaeological Institute of America (AIA). A team led by University of Kentucky archaeologist Paolo Visonà then used ground-penetrating radar, lidar (lasers shot from an aircraft to map the ground's topography), magnetometry and soil core sampling to study the site.
