500 TOPOGRAPHY OF BLAKENEY POINT. 
area. Most of the shingle of this wasted system of hooks 
would appear to have drifted alongside the forward edge of the 
main area, which has, in consequence, been much reinforced in 
recent years. A further change is the production of an 
L-shaped terminus to the left-hand Long Hills bank — a 
re-arrangement that took place early in 1911 (Fig. 8). On the 
sea face there has been some slight widening of the shingle 
plateau and the production of a channel leading into the large 
black central area, which consists of sand overlying shingle. 
This inlet, which is named the Great Sandy Low 
(Fig. 14), is filled by the higher tides, but the water does not 
extend into the other lows which are associated with it. 
Having regard to this history of shingle movement of the 
last twenty-seven years, it is evident that growth in length is, 
at any rate for the moment, suspended, and that the present 
tendency is for such shingle as drifts on to the North-West face 
of the Headland to remain there in the form of apposition 
banks, with consequent widening of the Headland. 
Turning now to the dimes (dotted), with the North-West 
extension of the shingle plateau these have undergone an exten- 
sion in the same sense, throwing out from each end of the Great 
Sandy Low successive tentacles or parallel series of embryo 
Psamma dunes, which grow in height and extent as they 
arrest the sand which blows up from the strand beyond. In 
connection with this spread of the dunes, very striking is the 
persistence of the lows left between the successive dune ranges. 
The Long Low of the 1886 map 6 has persisted without material 
change to the present time ; while a second one, parallel to this 
and known as the Glaux Low, has been isolated during the 
period represented by the series of maps. Further to seaward 
a third row has come into existence. The entrance of the tide 
into these lows — other than the Great Sandy Low — is prevented 
by embankments of blown sand near their former junctions with 
the Great Sandy Low. 
As to the Great Sandy Low itself (PI. Fig. 14), at present 
forming a great plain in the heart of the Beacon Hills, the 
6 The loug straight line of black just above the Pelvetia Marsh. 
