Backshunt

A backshunt is a railway track configuration in situations where a change in direction is required and a traditional curve cannot fit.
There are two main applications of a backshunt.

To climb or drop a steep incline using a zig zag
To change direction on to a parallel track, often used in industrial sidings.
Example Backshunts

Part of the old Cleator and Workington Junction Railway was maintained in Rowrah as a backshunt from Rowrah Head Quarry on to the Whitehaven, Cleator and Egremont Railway.