Réserve naturelle nationale du Tanet-Gazon du Faing, National nature reserve in the Vosges, Grand Est, France

Réserve naturelle nationale du Tanet-Gazon du Faing is a protected area in the Vosges covering 505 hectares with high-altitude grasslands, peat bogs, and mountain forests at elevations between 1160 and 1306 meters. The terrain displays the typical features of this mountain zone with open meadows, wetland areas, and forested sections.

The reserve was created by ministerial decree on 28 January 1988 on the land of Plainfaing and Le Valtin, straddling the Route des Crêtes, within what is now the Ballons des Vosges Regional Natural Park. It protects former high pastures, or chaumes, that grazing had shaped for centuries before they reverted to heath. The Lorraine Nature Spaces Conservatory manages its 505 hectares.

The name chaume, used for these summit pastures, comes from the Vosges term for land cleared by burning and then grazed. The local word brimbelle for the wild blueberry survives in the name of the farm-inn at the Gazon du Faing, where the 1.9 km educational trail begins.

An educational trail of about 1.9 kilometers starts at the Gazon du Faing farm and winds through the reserve with marked sections. Some areas are open to visitors while other zones remain restricted to protect the wildlife that lives there.

The reserve's granite boulders and block fields, shaped by ice-cap glacier erosion, include the Roche des Fées, which overlooks the Route des Crêtes at 1,210 m just north of the farm-inn car park. The red zone of 185 hectares is closed to the public as a quiet habitat for the capercaillie.