Dukart's aqueduct

Dukart's Canal was built to provide transport for coal from the Drumglass Collieries to the Coalisland Canal in County Tyrone, Ulster, Ireland. It opened in 1777, and used three inclined planes, rather than locks, to cope with changes in level. There is little evidence that it was ever used, as the planes could not be made to work properly, and they were dismantled in 1787. The most prominent canal structure still extant is this ashlar stone aqueduct at Newmills, built around 1768, where the canal was carried over the River Torrent.