WOODHAM WALTER COMMON 23
Fig. 1. The boundaries and main features of the Common.
A comparison of Figs. 1 and 3, reveals that the sandy soils
are on the higher ground. (This is true of the whole of Dan-
bury Hill, which consists of a mound of London Clay capped
by Pebble Gravel of glacial origin, the hill being at the extreme
southern limit of maximum glaciation. The many streams
have all cut through the gravel and made valleys in the clay
below.) Prom the SW corner of the area, two main ridges of
sand diverge, one running parallel to the northern stream, and