A £4 million project is underway above the coastal railway line, near Whitehaven in west Cumbria.
Up to fifty thousand tonnes of soil is being removed from a steep hillside at Lowca to prevent landslips above the tracks.
In November, the embankment gave way when rain water and local streams weakened it, causing a landslip.
Network Rail is undertaking the task. A new drainage system is being installed during the work, which should prevent future disruption to freight and passenger services.
Around £8 million is being invested on the coastal route through west Cumbria. The Whitehaven and Bootle line set to be renewed in the summer.