At least eight weeks without Scunthorpe to Doncaster trains while line is repaired
Passenger train services between Scunthorpe and Doncaster look like being interrupted for at least eight weeks.
Network Rail says the landslide at Stainforth that has caused the cancellations is still moving and the site remains dangerous.
Bus services are operating as an alternative to trains.
Network Rail engineers have not been permitted to start work on site "as a safety precaution" and the initial estimate - dependent on a fuller investigation - is that the line will be shut for approximately eight weeks from the point when the land stops moving.
Therefore, no trains will operate between Doncaster and Scunthorpe for the foreseeable future.
A half-hourly bus service between Doncaster and Scunthorpe will run "with additional buses to ensure everyone can make connections."
Additional management and support staff have been deployed to stations.
Nick Donovan, the First TransPennine Express Managing Director, said: "The ground at Stainforth, between Doncaster and Scunthorpe, remains extremely unstable and land movement continues. The site needs to be made safe before Network Rail can fully investigate the damage caused.
"This is, however, very significant and it is now highly unlikely that we will be able to operate a train service for at least the next eight weeks between Doncaster and Scunthorpe.
"This is clearly major disruption and I want to assure passengers that we are doing everything within our power to make journeys as stress-free as possible and return the line to normal service as quickly and safely as possible."