Access Issues
Although the place is not a national park it is classified as Natura 2000, a european label for places of natural interest. Some plants and small animals are unique here so be careful, don't damage anything, take away your garbage.
The valley is also shared with walkers, runners and bikers who come to enjoy this peace of heaven. Please respect everyones need of calm and quietness.
Ethic
Park where indicated, take care of the environment, buy the local guidebook when possible (this is one of the ways you can help local route setters), clean up your shoes before climbing, don't spray beta, be polite.