“The Coneybury Anomaly is around 1.4 kilometres east-by-southeast of the Stonehenge monument, which can be seen from the site. There are extensive views south-east across the Avon valley, and west towards Normanton Down. The pit is not obvious on the ground and was discovered as a geophysical anomaly (hence the name) as part of the excavations of the Coneybury Henge, which is some 12 metres south-west of the Anomaly.”
https://en.wikipedia.org/wiki/Coneybury_Anomaly#Location
Thx. Wiltshre was where the action was.