Hole in Silbury Hill Under Repair
Engineers are completing repairs to a hole that appeared 2 years ago on the top of Silbury Hill in the midst of crop circle country, and hope to unlock some of its mysteries. English Heritage, which oversees the site, says the ancient man-made hill in Wiltshire has some kind of religious significance and is part of a group of ceremonial monuments that cluster around the village of Avebury. It is the largest artificial prehistoric mound in Western Europe, and measures 112 feet high and 550 feet wide, tapering to 92 feet wide at the summit.
Radiocarbon dating indicates it was built in several phases between 2800 and 2000 BC. The giant mound would have taken 700 men 10 years to complete, using antler picks and shovels made from the shoulder bones of animals.
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