I spose the sheer depth of the Avebury ditches sets them apart and validates applying the failed moat theory there rather than elsewhere. But equally, the depth could suggest that they were inspired by exceptional vanity or exceptional religious fervour. Or exceptionally athletic pigs...

Only one thing can be said about the ancient builders with a fair degree of certainty I reckon - they had an eye for what looked either impressive or fitting within the landscape. We can still appreciate that, though there are those in Dudlay that can't.