Engineers from Network Rail are to repair a 500,000-tonne land slip, which forced a section of the Settle to Carlisle railway line to close near Eden Brows.
By making these repairs, the rail service provider hopes to reopen the line over the course of several months of intensive work.
The repairs will include the building of a structure underneath the affected area in order to effectively support it once it's finished.
Improvements are expected to take a long time, as it will also involve major earthworks to stabilise the embankment.
To cope with the closure of this area of the line, Northern Rail customers have to travel on train services between Leeds and Appleby and replacement bus services between Appleby and Carlisle.
Rhiannon Price, Network Rail's project manager for the Eden Brows repairs, said: "Our aim is to do a thorough job that leaves the Settle to Carlisle railway line in better shape than it was before this land slip."