A huge landslip following heavy rainfall has hit a rail line today, leaving the track hanging in mid air as major disruption is now expected into London.
A main railway line collapsed in a "huge" landslip on Sunday, leaving one track hanging in mid-air on the embankment to the north east of Hook station in Hampshire, on the line from London to Basingstoke.
The 44-metre landslip is now expected to cause chaos for hundreds of passengers over the next few days, as engineers need to "stabilise the embankment".
The damage has now left just two lines of the four-track railway passable.
With both tracks designed for London-bound trains only, railway operators have advised travellers to check their journeys before heading out.
South Western Railway is urging its customers to check before they travel and to plan for alternative routes or transport to or from the south or west of Basingstoke to London on Monday.
Network Rail Wessex route director Mark Killick said: “This is a huge landslip and will have a massive effect on customers. The main line to Basingstoke is the spine of our railway and there will be knock-on impacts across the route.
“I can only apologise for the scale of the disruption and please ask that customers check before they travel this week, not just on the affected section, but all the way up the line to London Waterloo, where many of the trains that would use this section of railway start and finish their journeys.
“We’re still assessing the damage and it’s difficult to put a detailed timescale in place, but we know it’s going to be at least a week."
Mr Killick continued: “We will need to stabilise the embankment, essentially stopping it moving, and then rebuild the railway where it has slid away.
“We’ll keep everyone informed of our progress and I can only say thank you to everyone for their patience and apologise again for the disruption. Please look out for further updates from South Western Railway on the revised timetable, once this has been able to be confirmed.”
A Network Rail spokesman explained that the embankment was made from a mixture of London Clay and other soils which have become saturated days after heavy rainfall.
The spokesperson said: “The slip happened when the soil gave way along a 44-metre section of 10m-high embankment, sliding out from underneath the tracks, in what engineers call a ‘rotational failure’.
“Network Rail and its suppliers are working on designs for the work needed to repair the railway, which will give a clearer idea of timescales.
“In addition, a train plan to provide journey options for customers on the route will be published as soon as possible."
A railway landslip, also known as a landslide, is when soil, rocks and earth fall onto and either wholly or partially block the track.
They commonly occur when the ground becomes saturated with water after long periods of heavy rain and can cause major disruption until the infrastructure is checked to make sure it is safe and working.