Urban archaelological digs

A house was recently pulled down in this central town street to make way for a new building to be erected on the section - probably an apartment block, as the rest of the street is full of them. Before the ground is dug up to lay foundations for the new building, the archaeologists move in first to check for remains of ancient structures. The holes in the ground are old rooms or houses that were found on the site. The remains will be recorded, and eventually the owner of the plot will be allowed to start building on the land.