baz, there arnt any natural sarsens in this area, its all gravel and sand heath land for miles around . also the graveyard is circular which to me is the best evidence that this church was built in a stone circle as circular church yards a re quite unusual. regarding the mound. i live near this church and upon visiting it happened upon the vicar, he told me the mound was built to accommodate an extension in the mid 1970s and is not of ancient origin though he did acknowledge that the church had been built inside a neolithic stone circle.