Thorne South railway station is north of Doncaster on the line that has a terminus of what resort town?
Thorne South railway station:  The station is 9.75 mi north of Doncaster on the South Humberside Main Line. South Humberside Main Line:  It then runs eastwards to Scunthorpe and the Humber ports of Immingham and Grimsby, with the coastal resort of Cleethorpes as terminus.
Cleethorpes