Historical street view Manchester area 1940s, 1950s showing Ordnance Survey revision point marking.The photo shows a series of flooded pits known locally as Seven Pits, Pea Pits or Kernbry. They were sunk to reach a shallow coal seam, but soon also, along with the adjacent field were used to extract clay for brickmaking probably in the 19th century. The houses at the back are on Ainsworth Road.