I have also been working, this week on a follow up post to one I created in 2013 after encountering some interesting remnants of a metre-gauge tramway running between Sospel and Menton to the east of Nice and Monaco. The original post was relatively short:
https://rogerfarnworth.wordpress.com...menton-tramway
This new post is more detailed:
https://rogerfarnworth.wordpress.com...de-provence-51
Enjoy!