No trains will run in or out of Liverpool Lime Street station for “several days” after a wall collapsed onto the track.
The collapse occurred at about 5.45pm on Tuesday between Edge Hill and Liverpool Lime Street – the city’s main hub.
A section of trackside wall “loaded with concrete and cabins by a third party” fell, blocking all four lines into the station, Network Rail said.
National and local services have been severely hit and passengers have been warned to travel to Merseyside by train.
“Train customers are advised to check before they travel at nationalrail.co.uk for the latest information and with train operators.
“Five large containers, each holding many tonnes of material, have been stacked by a third party on elevated land beside the collapsed section of wall.
“With part of this land having given way, these containers need removing to make the cutting safe and prevent further slips.
“Only then can we get safe access to the tracks below and develop a plan for the clear-up and repairs.”
Northern Rail said a limited service is now running on trains between Manchester and some Liverpool stations, including Huyton and Liverpool South Parkway.
Services between Liverpool and London will start and terminate at Runcorn with rail replacement buses between the town and the city centre, a statement from Virgin Trains said.