Crickley Hill: the radiocarbon sequence

Professor Dixon writes: "Over the past year I have been working with two or three people on the Neolithic at Crickley, and now have a text and over 40 C14 dates. Would it be interesting to hear about these? I attach the latest calculations of the dates of the site."  The range of the dates is fascinating, I think and covers a far wider span certainly than I previously knew: I had no idea that the Long Mound was anything like as late as the above chart shows.  Tell us some more, Phil ...  what is the banana barrow? I knew not about a cairn... Are you sure that the Dark Age dates are not contaminated by an old pair of John Parry's denims?