There are many ibexes in the Montagne de Glandasse that were gradually introduced in the Vercors from 1989 onwards. This majestic hoofed animal can weigh up to 120 kilos, with horns that can exceed 90 cm (for males). The males are equipped with a goatee and especially impressive curved horns. Those of the female animals are much shorter. The fur of the males is generally darker than that of the females, varying from chocolate brown to gray, depending on the season.

The Valcroissant abbey is a former Cistercian abbey five kilometers east of the town of Die where the Glandasse mountains close the valley. The abbey was founded in 1188 as a subsidiary of the Bonnevaux abbey. In 1400 the abbey was merged with the abbey of Bonlieu. In 1551, five monks lived in the monastery. The abbey possessed the good of Paul in the religious community of Luc-en-Dios. In the mid-fifteenth century, the abbey fell into the hands of a commandery. In 1568 the monks were expelled from the monastery by the Protestants and the monastery was no longer occupied until the dissolution following the French Revolution in 1791, after which the economic value of the area deteriorated. After the revolution, the abbey was sold and the buildings were preserved. The cloister has unfortunately been completely demolished. The abbey is classified by Monument Historique as a landscape company, namely a sheepfold and you can spend the night in the inn.