Antoninus

Wall of, a military defense constructed by the Romans in Britain about 140 A. D. It led from Old Kirkpatrick on the Clyde to the Firth of Forth, a distance of twenty-seven miles. The work was designed to keep out the northern barbarians. It consisted of a ditch about twenty feet deep and forty wide; a breastwork of earth and stones, twenty-four feet thick at the base and about twenty feet high, and a military road following the south side of the wall from Clyde to Forth. The work was protected by a chain of nineteen forts with watch towers at frequent intervals. A force of Roman soldiers kept constant guard. Traces of the wall may still be found. The defense was named for Emperor Antoninus Pius, during whose reign it was constructed. See Hadrian