One of the most mysterious and remarkable places in the whole of the Wiltshire megalithic area which encompasses Avebury and further away, Stonehenge, is Silbury Hill. It is one of the few places which despite enormous amounts of archaeological research, going back over centuries and with all the latest technology, no-one really knows why it was there or what its purpose was. Nothing seems to have been buried there, there seems to be no cairn or other site beneath it. There may have been a wooden pole, maybe like a totem pole round which the structure was built, but no modern evidence of this has been found, only reports in eighteenth century newspapers.
It is the largest man-made mound in the whole of Europe; if you put it next to a pyramid in Egypt it would be just about the same height and volume, and was actually constructed at a similar time, about four and a half thousand years ago, in about 2400 BC.
It must have been a very important and significant monument – think of the amount of time and people it would have taken to construct it. the society must have been rich and peaceful at the time to be able to devote that amount of labour to building something which had no practical purpose, whatever its religious or spiritual significance.
If you are ever in the area, it is really worth visiting; you ae not allowed to walk up it, but you can walk round it, and from there it is an easy stroll to the Avebury complex.