Try looking at the old native gods that would have been twinned with the roman ones. The temple is interesting because it might probably reflect local gods that could have survived from bronze age time. and Twin river/parallel roads (or tracks) or twine maybe to reflect a curving, snaking river.... and there is always Julian Cope's TMA description and illustration defining the Ure/Swale plateau. Its the landscape that will give clues as to why it became so important in neolithic times.