 Ynysforgan used to lie on both the main Brecon to Swansea Canal which was navigable until the late 1950s and a Swansea Valley railway line.The canal was filled in and covered over in the 1960s and the route of the railway line has now been used as the Swansea valley by-pass road.There were several relics of World War II such as pillboxes and manholes along the canal