Rocher Blanc, Mountain peak in Belledonne range, Isère, France.

Rocher Blanc is a 2,928-metre summit in the Belledonne range in Isère, the third highest of the chain. Its pointed crest is streaked with snow, with dark rock faces and snow-filled gullies below the top and a rocky ridge descending on the right. Broad snowfields lie around its lower slopes, above the Sept-Laux lakes.

The sources record no first ascent or climbing history for Rocher Blanc. Its documented facts are topographic: at 2,928 m it is the third-highest summit of the Belledonne chain, two metres above the Croix de Belledonne, and it overlooks the Sept-Laux lakes in the Isère department.

The peak's name comes from the pale gneiss that contrasts with the darker rock of the Belledonne chain. It stands just two metres above the Croix de Belledonne, a summit far more frequented by climbers, so the Rocher Blanc sees fewer visitors despite its greater height. Ascents are made on foot or on skis.

Three ascent routes exist: via the Combe Madame, via the Sept-Laux lakes and the Col de l'Amiante, or from the Rieu Claret chalets on the road to the Col du Glandon. The climb is relatively easy on foot or on touring skis. The summit stands at 2,928 m, so snow can linger on the upper slopes outside high summer.

At 2,928 metres, Rocher Blanc tops the Croix de Belledonne by two metres, making it the third-highest summit of the Belledonne chain. It rises above the Sept-Laux lakes in the Isère department. Its ascent is considered relatively easy on foot or on skis, via the Combe Madame, the Sept-Laux lakes and the Col de l'Amiante, or from the Rieu Claret chalets on the road to the Col du Glandon.