Along the same lines, near where I grew up is Eddleborough Church built on a potential neolithic mound. It's huge, I've been to it an is definitely not natural. Some refernces online refer to it as definietly prehistoric and others say only possibly. This one refers to it as a barrow but it's much bigger than that and is comparable in size to Marlborough Mount.
http://en.wikipedia.org/wiki/Edlesborough#St_Mary_the_Virgin
Also it's within sight of Ivinghoe Beacon hill fort which is the start of the Ridgeway which leads you know where! If it is prehistoric the 2 must be linked. Could this have been connected as the start and finish of the journey from one end of the ridgeway to another?[/quote]
I'm a little puzzed as to why these things take so long to determine if it only takes soil samples to clarify the situation. Money yes as Nigel hinted at but surely not that much!