a gate on the Viminal, in the middle of the Servian
agger (Strabo v. 234
; Fest. 163, 376, 377; Frontinus, de aq. i. 19).
Some remains of it are still to be seen just north of the railway station.
The road which issued from it appears to have been of minor importance and passed through the Aurelian wall by a postern south of the
Praetorian camp (BC 1876, 168-170
; 1914, 80
; PBS iii. 85-86
; LF 17),
the so-called PORTA CHIUSA