South Yorkshire is a metropolitan county in England. It is the southernmost county in the Yorkshire and the Humber region. Lying on the east side of the Pennines, South Yorkshire is landlocked, and borders Derbyshire to the west and south-west, West Yorkshire to the north-west, North Yorkshire to the north, the East Riding of Yorkshire to the north-east, Lincolnshire to the east and Nottinghamshire to the south-east.
The metropolitan county lies largely on the carboniferous rocks of the Yorkshire coalfield which have produced a rolling landscape with hills, escarpments and broad valleys. In this landscape there is widespread evidence of both current and former industrial activity.