The historic Nice to Digne-les-Bains Line has been in the news in France over the past few months. In February 2019 there was a collapse of the tunnel at Moriez while strengthening work was taking place. In November 2019 the already closed line suffered some further damage as a result of bad weather. The linked post covers the latest news about repairs on the line. .....
http://rogerfarnworth.com/2020/03/09...intenance-work