It has happened literally no sooner than the restoration of services in Cumbria, in England. Trains through Caldercruix, in Scotland, have been stopped by the same problem. A huge hole has opened up on the edge of the town, directly under the tracks of the Airdrie – Bathgate line, a route that connects Glasgow and Edinburgh, two of the biggest cities in the UK. Network Rail engineers are looking into it, and expect at least a week of closure.