The hot and dry summer of 1995 once again proved the value and cost-ef
fectiveness of aerial survey. Numerous parchmarks were a product of th
e dry conditions throughout England, but especially in chalk grassland
, and they revealed important new archaeological information. A parchm
ark within the great Neolithic henge at Avebury identifies a new subte
rranean feature, confirmed by geophysical survey, which fills in furth
er details of the Avebury enclosure.