called _Ponte della Refolta_. It is worth while to get out of the
carriage here and turn into the field at the gate on the left, over
the bridge, to see this piece of ancient work, formed of great blocks
of tufa stone of the time of the kings, having some repairs in _opus
reticulatum_ of the republic. The paved arch over the stream is in
good preservation, and is older than the Cloaca Maxima, but not so
well known. It is evidently the work of Ancus Martius, who made the
port of Ostia, and consequently the road to get there. At the top of
the hill above we get the first view of the sea and the last of S.
Peter's. We now pass through the woods and along an ancient causeway
through the salt marshes to the modern village of