Today I visited a place that I haven't been to for years, Avebury.
It hasn't changed much in that time, although the rest of the world has certainly changed in the 6000 years or so since it was built.
Even the more recent changes (i.e.trees from the last few hundred years) seem to have a slightly creepy air...
Mostly there were too many people to take pictures, but at one point the couples and the families gradually evaporated, the kids went elsewhere, and all of a sudden I was alone in a bronze-age landscape.
We know a little bit about how it was all done, but as for the people who built the largest stone circle in the world - we don't even know what they called themselves...