French authorities said it had considered a railway track in the French Alps to be safe before two people died when a tourist train was derailed by a falling boulder.
Regional transport official Jean-Yves Petit said that even in winter "the track isn't unusually dangerous".
About 30 people were onboard the train, which was left dangling from a clifftop for hours after the incident.
A train travelling through the French Alps was left dangling for hours after being derailed by a fast-falling boulder.
Two people were killed and nine injured after the so-called Train of the Pines was hit by a boulder just outside the town of Annot.
The mayor of the town Jean Ballester said the rock fell with "an extraordinary force".
Read: Deaths confirmed after falling boulder derails train
French authorities have confirmed that two people were killed and nine were injured after a giant rock derailed a train outside the town of Annot.
Around 30 people were on board the tourist train travelling in the French Alps.
Two rescue helicopters were dispatched to the area to help evacuate the stricken train.
Two people, including a Russian tourist, are reported dead after a train derailed in French Alps, 150 kilometers north of the coastal city of Nice.
Firefighters and medical staff had some difficulties reaching the remote snowy site.
Railways of Provence experts told a local newspaper Nice-Matin a rock falling on the tracks might have caused the accident.