A computer generated panoramic picture. One can see that to the left there is an edge where the floor of the sqaure stops. When inspecting there I found that there was a kind of corridor, a few meters below, from where one could visit some rooms that one one side lie under the square, the whole area seemed to be used for storage. I will show those pictures later, as well as the corridor. Further to the left (west) of the corridor there were some rooms, so the west wall of the whole lies a bit further than the edge of the square.