Rhosyfelin reconstructed

 

 

The above photos are from present-day ice-contact or dead-ice environments where we have complex mixtures of morainic or till deposits and fluvio-glacial materials where torrential streams are at work.  These are reasonable representations of what Rhosyfelin might have looked like at the end of the Devensian glaciation hereabouts -- with the added complication of a broken rocky crag which dumped assorted blocks (and "proto-orthostats" if you like that expression) into the mix.......