what does Rivelin Rocks and A57 road have in common?
Rivelin Rocks Rivelin Rocks are a gritstone edge or escarpment in the upper Rivelin Valley at grid reference [ SK279873] , 9 km west of Sheffield just off the A57 road in the county of South Yorkshire, England.
R187 road (Ireland) The R187 road is a regional road in Ireland, located in County Monaghan. It runs from the N54 to the border, where it continues as the B36 road to Rosslea, County Fermanagh.