Parker, John Henry: The archaeology of Rome (1,2): Illustrations to I. The primitive fortifications. II. The walls and gates of Rome. III. The historical constructions of walls (Oxford [u.a.], 1874)

HILLS OF ROME.

The Ccelian.

Plate XVI.
Ccelian—Gorge, Fort at an angle, part of the Villa Celi-
Montana. This is another part of the same ancient fortress as the
last, which is a promontory on the south-west side of the hill, the
end of which is towards the Porta Metronia in the south wall, under
which the river Alrno enters Rome ; on either side of this is a gorge,
cutting deep into the hill, one of which is shewn in the view. The
upper and narrow end of the gorge nearly meets in the tongue of
land which connects this fortress with the other on the northern
side, on which the Claudium was built. The Navicella stands on
that tongue of land, and close to the site of the gate of the Ccelian
fortress, at the end of the southern gorge. The Arch of Dolabella
also stands on this tongue of-land, and was the gate to the Claudium,
at the end of the gorge on the other side of the hill.