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SYMPOSIUM PHOTO INTERPRETATION, DELFT 1962 
Fig. 3. 
of the twin palisade trenches were examined and cleared. The posts had 
originally been placed in them at intervals of about half a metre, and the 
trenches themselves had joined on a curve at either side of the entrances. The 
excavation also showed that a single fence of the same kind lay at a distance of 
some 10 metres outside the pair. This feature formed an additional defence, as 
well as providing an enclosure in which beasts could be mustered or kept. 
Inside the main enclosure, the rings and arcs and the small depressions were 
found to represent the surface traces of the foundations of a class of circular 
timber-framed houses to which the name ring-groove has been attached (fig. 2). 
When cleared, the grooves were found to represent the shallow trenches into 
which the timber or wattle walls and partitions of the houses had been set. The 
roofs had been supported on posts standing in holes in the grooves or on the 
floors of these. 
Many other settlements of this and other plans were found after the discovery 
of the Hayhope Knowe settlement. For example, all-timber houses of a closely-