MEN OF THE loo-FOOT TERRACE i6i 
The chief records of this culture lie in deposits along the 
river valleys, in old stream-beds or deposits laid down 
at various intervals during the Pleistocene epoch. The 
site which yields the classic implements of this culture 
(beautifully worked flint hand-axes) is situated at St 
Acheul, near Amiens, in the valley of the Somme. A 
replica of the terrace at St Acheul can be found in Eng- 
land, in that stretch of the Thames valley where we 
commenced to study the deposits and culture of the 
Fig. 56. — Swanscombe and neighbouring Palaeolithic sites on the south side 
of the valley of the Thames, below London. 
Mousterian period, and where I propose to take up the 
search for man of the older or Acheulean period. Fig. 56 
shows the position of the various deposits — remnants of 
ancient beds of the Thames — to be investigated. The 
Mousterian culture was found in the 50-foot terrace — 
the low terrace of Continental writers ; it is the much 
older terrace — the 100-foot — which is to yield us traces 
of Acheulean man. At Swanscombe, situated on the 
south side of the valley, half-way between Dartford and 
Northfleet, the gravels and loams of the 100-foot terrace 
form an extensive deposit, in some places over 30 feet in 
II 
