Mont Préneley, Mountain peak in Morvan, Nièvre, France.

Mont Préneley is an 855-meter peak in the Morvan featuring protected peatlands and typical regional forest types. The site encompasses varied habitats within a protected natural area of European importance.

The mountain received natural protection status in 1930, marking an important moment for safeguarding the Morvan. This early recognition helped establish the area as a protected region.

The 2.5 km interpretation trail of the Yonne springs, laid out from the Port des Lamberts hamlet in Glux-en-Glenne, carries panels on the peat bog and the Morvandelle forest. The Nièvre departmental council has owned the mount since 1999 and manages it as a sensitive natural area, for conservation and for public awareness.

A network of marked trails enables exploration, with the main route starting from Port des Lamberts in Glux-en-Glenne. The paths are clearly signposted and the area is straightforward to access.

The Yonne rises in the peat bog of the Port des Lamberts on the mountain's slope, fed by several springs before flowing on. A 2.5 km interpretation trail, the Sentier des sources de l'Yonne, loops from that hamlet in Glux-en-Glenne. The summit is the third highest in the Morvan at 855 m, after Haut-Folin and Grand Montarnu.