Construction of the Settle-Carlisle railway line employed many thousands of men. Almost 1000 of these worked at Ribblehead on the major engineering tasks of building the Ribblehead viaduct and Blea Moor tunnel. The area is isolated and so construction towns had to be specially built to house this army of workers, the remains of which can still be seen as low earthworks and flat building platforms.
Most of the workers lived in prefabricated single-storey wooden terraces, but the Batty Wife Hole settlement also included shops, pubs, a school, a post office and library as well as a small isolation hospital.
Closer to Ribblehead viaduct lay the engineering camp of Sebastopol with its suburb, Belgravia. Sebastopol included a large brickworks as well as terraced lodging houses and an engine house with a sunken inspection pit. Remains of the brickworks can still be seen.
The cache is a the size of a grapefruit and contains several small swaps.