Callanish 40
Image by Moth

Yes that is so. Mr T meant that the rock was among the oldest on the planet not the erected prehistoric monument.

Tha's a shame - I was kinda hoping there was some sort of monument-constructing human aroun 3 billion years ago... ;o)

Yes - that was what he meant - the rock itself is 3 billion years old (is that the same as 3000 million? That's what the Rough Guide calls it..!) and Julian's socks are 7000 years old (and apparently constructed to align to the muidsummer sunrise)

G x