A rectangular area about 700 yds.

from east to west and 360 yds.

from north to south is divided into fifteen square or squarish 'insulae' arranged in three rows.

Each insula is about 3 acres, but those of the middle row are larger than the rest (150 x 150 yds.).

The Via S.Croce which runs along the south side of this row was perhaps the main east and west thoroughfare of the town, the 'decumanus maximus', so that the larger 'insulae' correspond to those which appear in the same position at Turin and elsewhere (p.