A landslip in Essex means train services between Colchester and Clacton-On-Sea have been suspended.
Network Rail engineers deemed the area between Alresford and Great Bentley unsafe for trains to run.
Train services will be disrupted until repair work can take place.
Greater Anglia says tickets for today will be accepted tomorrow.
Until works have been completed and engineers are satisfied with the works and deemed it safe, train services will be suspendedA rail shuttle service will be in operation between Walton-on-the-Naze and Thorpe-Le-Soken.