Incidentally, that diagram was in an Update released in June whereas on 26 July we have the Avebury Lodge website reporting that "locals are talking about hearing of a catastophic internal collapse".

Did the locals hear of a catastophic internal collapse? Or was it a rumour without foundation and everything is as EH said it was in June? Blowed if I know. Do you?

See what I mean about EH providing a totally inadequate information flow?