It was a long way to go from Chepstow, with its border-crossing bridge and old castle but the uphill and downdale road to Raglan was beautiful in the Spring sunshine. From there we headed up the nearly complete Heads of the Valley road, generously funded by the European Union, towards Merthyr Tydfil with spectacular views south down the valleys over the old pit towns of Ebbw Vale and Tredegar. At Merthyr we turned up the valley towards the hills and the Brecon Mountain Railway that starts at...