The second wall of the city, which was rather an enlargement of the first, was cyclopean on the east as far as the present Porta del Sole, and either scarped cliff or opus quadratum round to Porta S. Martino, and up to Porta S. Francesco.[69] At the east end of the modern Corso, there was a gate, made of opus quadratum,[70] as is shown not only by the fact that this is the main street of the city, and on the terrace level of the basilica, but also because the mediaeval wall round the monastery of the Madonna degl'Angeli, the grounds of the present church of Santa Maria, did not run straight to the cyclopean wall, but turned down to join it near the gate which it helps to prove. Next, there was a gate, but in all probability only a postern, near the Porta del Sole where the cyclopean wall stops, where now there is a narrow street which runs up to the piazza Garibaldi. On the south there was the gate which at some time was given the name Porta Triumphalis. It was at the place where now there is no wall at all.[71] At the southwest we find the next gate, the one which is now closed.[72] The last one of the ancient gates in this second circle of the city wall was one just inside the modern Porta S. Martino, which opened west at the end of the Corso. All the rest of the gates are mediaeval. A few words about the roads leading to the several gates of Praeneste will help further to settle the antiquity of these gates.[73] The oldest road was certainly the trade route which came up the north side of the Liris valley below the hill on which Praeneste was situated, and which followed about the line of the Via Praenestina as shown by Ashby in his map.[74] Two branch roads from this main track ran up to the town, one at the west, the other at the east, both in the same line as the modern roads. These roads were bound for the city gates as a matter of course and the land slopes least sharply where these roads were and still are. Another important road was outside the city wall, from one gate to the other, and took the slope on the south side of the city where the Via degli Arconi now runs.[75] As far as excavations have proved up to this time, the oldest road out of Praeneste is that which is now the Via della Marcigliana, along which were found the very early tombs. It is to be noted that these tombs begin beyond the church of S. Rocco, which is a long distance below the town. This distance however makes it certain that between S. Rocco and the city, excavation will bring to light other and yet older tombs along the road which leads up toward "l'antica porta S. Martino chiusa," and also in all probability rows of graves will be found along the present road to Cave. But the tombs give us the direction at least of the old road.[76]