Be carefull with local airspace rules (airport near)
Access
Here you can find the official informations and map:
http://lavl.free.fr/site-parapente-vosges/SitesValleeThur.html
Rules
http://lavl.free.fr/paragliding-vosges.html :Vosges Airspace Areas
or in french with maps : http://lavl.free.fr/Espace-Aerien-Vosges.html