sentences:  The A18 Snaefell mountain road was developed in the mid-nineteenth century from a number of pre-existing roads, carting-tracks and bridle paths.This included installation of a number of sheep-gates, milestones, the building of a series of embankments, revetments, purpose built graded sections which reflected nineteenth century highway and railway building practices.This included the distinctive road embankments which gave the S-bend corner the previous name of "The Cutting."