The previously unknown site was uncovered during excavations in 2013 prior to the building of 500 new houses by Bloor Homes .
The previously unknown site covers 0.4 hectares ( 0.99 acres ) .
The previously unknown site , which covers 0.4 hectares ( 0.99 acres ) , was uncovered during excavations in 2013 prior to the building of 500 new houses by Bloor Homes .