Roman Wall in Opus Reticulatum
This picture of a roman wall in a shop shows a typical example of wall building in Opus Reticulatum. The wall has a core of mortar and shards or stones whilst the outer facing is rather like a paved road with square ended wedges sunk into the body of the wall. The material used for the wedges was usually of porous Tufa stone commonly found in volcanic regions. There are many instances where the stone is worn away by weathering and there is nothing left but a honeycomb made of mortar.
