Visited 16th July 2003: For a bit of lunchtime exercise I went to see if I could find the crop marks to the north of Cerrig Llwydion, the remains of a possible henge (SN624838). I had it on good authority that they were visible from the train embankment, but managed to spot nothing. As a consolation prize I went to see the westerly of the two standing stones (SN62508354).