Vercors Regional Park is accessible by car from main surrounding cities for day trips or longer bvacations/b. Park entrance is within a 10 minute drive from all of these four cities: From Grenoble the main route is through the Furon gorge ( D531 ... From Valence, reach Romans first, using the N532, or directly enter the park taking the D68 east through the passes of Col des Limouches, or the D171 east to Alixan and then D101 through the perhaps more picturesque bTourniol/b pass. ...