Offa's Dyke Path

Day 12 (Sunday, 27 September 2015) Castle Mill to Llangollen (8 miles / 13 kilometres):
As we walked along the tow-path beside the Llangollen Canal, we began to catch glimpses of the Pontcysyllte aqueduct, which carries the Llangollen Canal across the River Dee, which is about 121 feet / 37 metres below the canal.