>>I've thought for some time that the summit of Silbury was designed to be flat and, if so, it would suggest that it was used for something.<<
If Paul Devereux is right and the top was to view the Glory ( possibly among a lot of other things), then yes, a path would make a lot of sense, spiral for ease of use, any particular reason why the path would be clockwise and not anticlockwise going up?
I'll look at the model when I've figured out how to, the message "This control contains an eDrawing2 file. The eDrawing ActiveX control cannot be used from a Netscape browser. Please use Microsoft Internet Explorer to view this model." really doesn't help as I'm using IE ....
Rune