A HOLE beneath the railway track caused major disruption to trains on the West Highland Line via Helensburgh Upper this week.

The railway was completely closed on Tuesday after the hole was discovered, with trains replaced by buses between Glasgow Queen Street and Crianlarich.

Network Rail tweeted a picture of a void which appeared underneath the track between Garelochhead and Arrochar & Tarbet stations.

The rail infrastructure company said: “The void near Garelochhead is at a location where the line crosses the Highland Boundary Fault - the geological junction between Scotland’s Highlands and Lowlands.

“The railway’s been subject to movement here since it was built. We have remote monitoring kit installed and carry out frequent alterations to track alignment to compensate for any changes in ground conditions.”

Services were able to resume on Wednesday morning.