sentences:  An unusually complex network of mineral railway lines, mainly running through the outer parts of the park, existed in the 19th and 20th centuries; the trackbed now being used as cycle paths in several places.A rare waggon-way bridge for the original horse-drawn railway (later relaid as standard gauge) still survives near South Fergushill farm on the B 785 Fergushill Road (see photograph), this being part of a long line running from Doura to Ardrossan.A very complex set of collieries, coal pits and fire-clay works are evident from records such as old maps.