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Petit Replomb walks
Petit and Grand Replomb via Lac de Crop
Visorando Member
9.89 mi
+5,302 ft
-5,318 ft
8 hrs
Very difficult
Departure from Laval (Isère)
A wild hike in Belledonne, beneath the rocks of l’Homme and le Ferouillet, skirting well-trodden paths yet staying far enough away to offer unique views of the varied landscape surrounding Lac de Crop.
The vegetation and streams are particularly stunning in autumn, and setting off early in the morning guarantees a chance to spot chamois or ibex.
The Col de la Mine de Fer and Lac de Crop loop from Pré Marcel
9.81 mi
+4,039 ft
-4,045 ft
8h 00
Difficult
Departure from Sainte-Agnès (Isère) (Isère)
A lovely hike in the Belledonne massif, allowing you to appreciate all the mountain levels, from forest to alpine meadows and up to the mineral levels of high altitude. From Pré Marcel, climb to the Refuge Jean Small Pass, then cross the Col de la Mine de Fer. Descend the opposite slope to Lac de Crop, then after a descent into its glacial cirque, reach the car park via a discreet path.There are several ravines and steep passages, some of which are secured by cables, before reaching the Refuge Jean Small Pass (altitude 1,950 m).
Col de la Mine de Fer, Lac de Crop, Pont de la Betta from Pré Marcel
11.49 mi
+4,314 ft
-4,321 ft
9h 00
Difficult
Departure from Sainte-Agnès (Isère) (Isère)
A long circular loop that climbs from Pré Marcel through woodland to the Jean Collet Refuge, before ascending towards the Col de la Mine de Fer amidst a rocky high-mountain landscape. The path switches to the opposite slope, offering magnificent views to the right over the Brèche de Roche Fendue and the Ferrouillet peaks, to the left over the Grand Replomb, and, far below, nestled in the centre of the cirque, the splendid Lac de Crop with its beautiful ultramarine blue waters. After skirting its right bank and passing its narrows, the trail reaches the Pont de la Betta before embarking on a long traverse through the forest, passing in front of the Waterfall des Avoux before returning to the car park. This walk, in the Belledonne massif, is a variation on the circular route ‘Le Col de la Mine de Fer and Lac de Crop’, starting from Pré Marcel.
Walks near Petit Replomb
Lac Blanc – Lac de Crop – Pont de la Betta
6.94 mi
+1,972 ft
-4,715 ft
4h 55
Difficult
Departure from Sainte-Agnès (Isère) (Isère)
The second stage of this Tour du Grand Replomb takes you through a rocky landscape with a steep descent towards Lac de Crop.
Sept Laux Day 1
7.18 mi
+4,232 ft
-1,614 ft
7h 00
Difficult
Departure from Laval (Isère)
A very beautiful stage in the Belledonne Massif, starting from the mountain pastures, which takes us through a mineral world to a setting of tranquillity on the edge of the Sept Laux (seven lakes).
Pont de la Betta - Lac Blanc
7.77 mi
+4,072 ft
-1,286 ft
7h 05
Difficult
Departure from Laval (Isère)
First stage of this lovely circular route in Belledonne, with the magnificent mountain lake, Lac Blanc, as the final backdrop.
Refuge de la Pra – Refuge Jean Collet
4.45 mi
+2,395 ft
-2,959 ft
4h 10
Difficult
Departure from Revel (Isère) (Isère)
A challenging day’s hike connecting two iconic mountain huts in the Belledone massif. Chamois, moraines and lakes will punctuate the route.
La Pra Mountain Hut – Jean Collet Mountain Hut
5.16 mi
+2,113 ft
-2,671 ft
4h 15
Difficult
Departure from Revel (Isère) (Isère)
A very beautiful hike, partly off the beaten track for the section between the Pra and Jean Collet mountain huts. Please note that this is an alternative route to theGR® 738, which passes via Lac du Crozet, Lac du Loup and the small pass of La Sitre.
From Lac de la Jasse to Prapoutel via Gros Cailloux
3.08 mi
+2,241 ft
-2,684 ft
3h 20
Moderate
Departure from Les Adrets (Isère)
This is a magnificent, easy walk that takes you through many beautiful natural sites, with breathtaking views of the Grésivaudan valley and the Chartreuse mountains.
Lac de la Jasse and Col de Bédina
4.20 mi
+410 ft
-2,562 ft
2h 15
Moderate
Departure from Les Adrets (Isère)
A beautiful high-altitude lake accessible by chairlift from Prapoutel. Descent via the wilder side of the resort. Passes by Gros Caillou, a popular spot for climbers.
Sept Laux J2
10.35 mi
+2,408 ft
-5,026 ft
6h 50
Difficult
Departure from La Ferrière (Isère) (Isère)
The second stage of this circular route in the Belledonne Massif, sometimes along a balcony trail, sometimes through wild valleys, takes you around the Allevard Massif.
⚠️15/06/2026: a notice indicates a rockfall at Cul de la Vieille between 2 and 3, making it impossible to follow this route. You must take the GR®738 as a detour. Please let us know in the comments if you have any information regarding the lifting of this notice.
Refuge des Sept Laux – Rivier d’Allemond
5.19 mi
+407 ft
-3,248 ft
2h 45
Moderate
Departure from La Ferrière (Isère) (Isère)
A classic, well-known hike in the area to explore the Lacs des 7 Laux. Here, only the descent is described and used to complete this traverse, as it is not possible to continue easily on to the Refuge de l’Oule.
Chamrousse - Refuge de la Pra
5.50 mi
+1,991 ft
-2,451 ft
4h 15
Difficult
Departure from Chamrousse (Isère)
Well known to Grenoble residents, this hike offers superb views of all the surrounding mountains, including Chartreuse, Vercors, Grandes Rousses, Taillefer and Belledonne. As soon as you arrive at the top of the cable car, your gaze is drawn to La Meije, which looks so close.⚠️ This hike can only be done on foot from 30 June to 1 October ⚠️