|Canton||Le Sud Grésivaudan|
|Community association||Saint-Marcellin Vercors Isère Communauté|
|surface||14.1 km 2|
|Residents||53 (January 1, 2017)|
|Population density||4 inhabitants / km 2|
Malleval-en-Vercors (until 2005 only malleval ) is a French municipality with 53 inhabitants (at January 1, 2017) in the department of Isère in the region Auvergne Rhône-Alpes ; it belongs to the Arrondissement of Grenoble and the canton of Le Sud Grésivaudan .
The municipality is located about 35 kilometers northeast of Romans-sur-Isère in the Vercors , a mountain range in the west of the French Alps at over 900 m above sea level. The municipality is located in the Vercors Regional Nature Park . The small stream Nan ( le Nan Ruisseau ) rises near the district of Railletière . It has cut deep into the rock and forms the Gorges du Nan , a gorge with two gorge- like narrow passages, before it flows into the Isère after a few kilometers .