There seems to have been only a postern in the ancient wall inside the present Porta del Sole.

[48]

Many feet of this ancient pavement were laid bare during the excavations in April, 1907, which I myself saw, and illustrations of which are published in the Notizie d. Scavi, Ser. 5, 4 (1907), pp. 136, 292.

[49]

Marucchi, Guida Arch., p. 57 ff. for argument and proof, beginning with Varro, de I. 1. VI, 4: ut Præneste incisum in solario vidi.

[50]

Cecconi, Storia di Palestrina, p. 43.