Cardo Maximus-a Journey through history. Starting from 2.5 M beneath the modern street level of Jerusalem lies these earlier layers of Cardo from Hasmonean (2nd-1st Cent BC) and First Temple Periods (8th Cent. BC)

2P: The stones above are remains of buildings from First Jerusalem Temple Period (8th Cent. BC). 

The cavity between the pillars are more recent.