BBC News August 24th … archaeologists have discovered a henge near Letchworth in Hertfordshire. It would have been visible from another henge on what is known as the Western Hills. Henges tend to occur in clusters so there may be others not far away. This one was discovered by an aerial photograph that revealed an extensive ring of chalk fill which had been ploughed out and on the ground it was not discernible. Archaeologists dug out a couple of trenches and found the remains of the encircling chalk bank – which had massive ditches inside and out. Grooved ware pottery fragments were found which indicates a third millennium BC date.