Agger

• An Agger was a linear embankment of soil and stones built behind a defensive Roman Wall to strengthen it.
• It was also the embankment under a Roman Road to raise it.

The Servian Wall

• The Agger Servianus formed part of the Servian Wall defending Ancient Rome. It was a strongly fortified double rampart.

Roman Roads

• Roman Roads had an Agger, which was a curved ridge underneath the surface that allowed the road to drain.

Servian Wall in Via di Sant Anselmo