Llangollen Canal an Act of Abandonment in 1944, allowing it to close of canals, including much of the Shropshire Union system. However, the line from Hurleston to Llangollen and onwards to Llantisilio was saved, as it was the main supply of water to the rest of the system. On 6 September 1945, due to inadequate maintenance, the canal breached its banks east of Llangollen near Sun Bank Halt. The flow of hundreds of tons of water washed away the embankment of the railway further down the hill, creating a crater which was long and deep. This caused the first traffic of the
Llangollen use of canals for leisure took off in the 1970s and 1980s, the route, twisting through Welsh hills and across the Dee Valley on the Pontcysyllte Aqueduct, has made it the most famous and busiest in Britain. The canal is an important part of Llangollen's attraction as a holiday destination. A marina, built at the end of the navigable section, allows summer visitors to moor overnight in Llangollen. The railway was extended from Ruabon, via Acrefair and Trevor, to reach Llangollen by 1865, operating passenger and goods services. The Ruabon to Barmouth Line became part of the Great Western Railway.