Geological map of Maidenhead district

Geological map (mainly Pleistocene) of the Maidenhead district showing sites of various gravel-pits mentioned in A.D. Lacaille's paper "The Palaeoliths from the gravels of the Lower Boyn Hill Terrace around Maidenhead" in Antique Journal, volume XX, 1940, pages 245-271, figure 1, page 246.