The tufo slabs, of different sizes and height, are sitting directly on the bedrock. This indicates that the construction of a road using tufo slab pavement, whose eastern limits have not been fully investigated, and represents the first activity in the area. As the other SUs appear to abut the slabs, it seems that the spoliation of the road happened at an early stage before the reorganization of the area.
Tufo slabs on east side of 9022