FOTO GRAND UNION CANAL - HATTON LOCKS HAY 21 CERRADURAS EN EL VUELO CON T
PHOTO GRAND UNION CANAL - HATTON LOCKS THERE ARE 21 LOCKS IN THE FLIGHT WITH THE TOP LOCK BEING NO. 46 AND THE NUMBERS DESCENDING FROM THERE. THE CLOSEST LOCK HERE IS NO. 42. PHOTO PAPER THICKNESS NORMAL PHOTOGRAPH THICKNESS.