Llangollen Canal has 19 stone arches, each with a 45-foot (14 metre) span. Another aqueduct carries the canal over the River Ceiriog at Chirk, and there are tunnels nearby at Whitehouses, Chirk, and Ellesmere. The canal also forms the boundary on two sides of the Fenn's, Whixall and Bettisfield Mosses National Nature Reserve. In 2009 an eleven-mile section of the canal from Gledrid Bridge near Rhoswiel through to the Horseshoe Falls, which includes Chirk Aqueduct and Pontcysyllte Aqueduct, was declared a World Heritage site by UNESCO. The canal at Hurleston Junction rises from the Shropshire Union Canal main line, through four adjacent
Froncysyllte in three days and, by 2009, had sold over half a million copies. Froncysyllte Froncysyllte (; ), colloquially known as Fron, is a village in Wrexham county borough, Wales and stands on the banks of the River Dee and the Llangollen Canal. It is situated on the main A5 road which runs from London to Holyhead. It is in the community of Llangollen Rural. The name is derived from the Welsh "bron" (here lenited to "fron"), here meaning a hill breast, along with the name Cysyllte, one of the old townships of the parish of Llangollen. The anglicised spelling "Vroncysyllte"