The West Coast Main Line near Carstairs, north of Carlisle, has been reopened for passenger services after emergency engineering works was completed to fix flood damage.
Heavy rain on 30 December caused a landslip beneath the tracks which destabilised foundations.
Over the last week engineers have been on site removing tonnes of loose material from under the line, regrading the slopes and installing 300 tonnes of new stone to ensure the embankment is securely stabilised.
The track was then relaid, and signalling systems tested before the line reopened on 6 January.
Liam Sumpter, Network Rail Scotland route director, said:This was a very challenging project, with hundreds of tonnes of material having to be removed and significant repairs made to over 40 metres of the railway.
Our engineers have worked as quickly as possible to complete these repairs and reopen the railway.
We appreciate the inconvenience the closure of the line has caused and we thank everyone for their understanding during these recovery works.
