Post it anyway, if you ask me. It's folklore, so it's part of the ongoing thoughts about the hill - so really, it doesn't matter if there *was a spiral path, it's that people thought / think there was. Well that's my opinion anyway.
Doesn't Michael Dames write about the path in 'Silbury Treasure'? I got my copy from the library, so I can't refer back to it.
K x
>> Post it anyway
Totally agree!