Archaeologists in Scotland have discovered the remains of a Roman "fortlet" that was built beside a massive wall that ran across Scotland.
Known as the Antonine Wall, the defensive border separated what is now southern Scotland, which had been conquered by the Romans, from the unconquered northern Scotland. The 38-mile-long (62 kilometers) wall was made largely of turf, or earthen materials, and its construction started in A.D. 142 on the orders of Roman emperor Antoninus Pius (reign A.D. 138 to 161) following the Roman conquest of southern Scotland.
