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
Trent and Mersey Canal and two smaller tunnels at Saltersford (since 2008 also one-way operation, alternating each half-hour), and Barnton to the "junction" with the River Weaver at Anderton Boat Lift near Northwich. After Anderton, the next major destination is Middlewich, where a junction with the 50 yard long Wardle Canal leads to the Middlewich Branch of the Shropshire Union Canal which gives access to Chester, Llangollen and (south on the 'Shroppie') a parallel route to Birmingham/Wolverhampton. South of Middlewich, having passed through Wheelock, the T & M climbs out of the Cheshire Plain via the 'Heartbreak Hill' locks (more traditionally known as the