Yes it was, and the girl on duty was both interesting and informative on the subject, she was also of course reassuring about the plight of Silbury, but that was only to be expected.
She talked of archaeological 'monoliths' not stone this time, but squares of chalk taken for future research and frozen in time ,of course in cold storage, bit like heritage seed collections, they would be kept I suppose for sediment and pollen analysis......
Silbury is as always enigmatic, was the platform on top levelled by Saxons who would have stockaded the hill quite easily, could Silbury sit on a henge, somehow when you come to visit the minds and times of prehistory it makes you realise that over a long time span lots of things were happening round Silbury...A bit like Stonehenge with its mesolithic timbers in the car park, people coming back again and again to the same place ....