Tête Nord des Fours

More than just a tourist attraction, the Roman roads were one of the main routes used to cross the Alps in ancient times! Before the Roman invasion, the Ceutrones, a Celtic tribe who farmed livestock, inhabited the Val-Montjoie. To make cheese, they used salt mined at Moutiers via the Col du Bonhomme. They were involved in building roads to Italy. These roads were taken over by the Romans when they invaded the Alps. Take a look at the Rochassets pass: it was carved out of the rock to allow chariots to pass through!

On your left are the Rosière boglands, but be careful to only admire them while walking along the path, as they are fragile environments and hidden treasures of biodiversity! Tracing its origins from the Ice Age, this boggy area is the result of a glacier erosion which caused water to stagnate. This is the kingdom of carnivorous plants such as the Alpine cattail or the round-leaved sundew...

It is a small carnivorous plant that lives in low-nutrient peat bogs. Don't worry, it only feeds on insects, which it attracts and digests using a viscous substance produced by the red bristles that cover its leaves. It is also known as " Rossolis or Sundew " because the substance sparkles when exposed to light. This species is fragile and protected, please do not touch it!

Also known as the "Téna Bridge", this structure dates back to Roman times! It is located on the strategic route used at that time to reach the Tarentaise valley and Italy from Les Contamines. This route, which has since become the famous long-distance GR5 hiking trail, is a popular tourist attraction. The bridge overlooks the gorges of Bont nant. Marvel at the pools of water that the waterstream has sculpted over the years!

This classic mountain refuge dates back to the 1800s. In 1842, the municipality of Les Contamines gave permission to build an inn here. It was known as the " Mountain Hotel " until 1976. With the development of the " Mont Blanc Tour " long-distance hiking trail, it became a refuge. However, ever since its creation, it has always been in the hands of the same family! It is open from June to the end of September. The Nant Borrant refuge is at the gateway to the nature reserve that begins just beyond the stream...

White in winter and with brown backs and beige bellies in summer, stoats have black tail tips all year round. Often confused with the common weasel, the stoat differs in size. It is larger (17 to 33 cm) and has a two-coloured tail. A carnivore, its favourite prey are voles. Stoats are vivacious and playful. The Stoat often moves in leaps of up to 50 centimetres in height, covering great distances for its size of up to 15 km.

Alpine pastures are a landscape that have been shaped by humans since prehistoric times, during the Neolithic period, when livestock farming was first practised. Had it not been for the grazing of domestic animals at this altitude, the area would have been occupied by a few species of bush accompanied by few animal species. The mountain pasture is a rare example where human activity generates a biodiversity of animal and plant species that is more prolific than what would be produced by the natural evolution of the environment. Many species of plants, birds, invertebrates, mammals, etc. can be found here.

How can you tell which breeds of mountain cow can be found here? The Abondance breed originates from the village of the same name in the Chablais region of Haute-Savoie. It can be recognised by its distinctive mahogany coat and white head and belly. The 'Herens' cow comes from Valais in Switzerland. They are bulkier, with a single-coloured coat that is often black, sometimes dark red or chestnut. Its provocative, aggressive behaviour is used in the traditional "battle of the queens" in the 3 countries around Mont Blanc. But rest assured, no animals are harmed in such contests!

Situated at the foot of the Aiguilles de la Pennaz (2668 m) as part of the Mont-Blanc tour, this refuge has a strong heritage of family tradition. Three generations have welcomed hikers here. This former farmhouse is surrounded by mountain pastures that are still cultivated by mountain farmers. Just look at the height of the roof and little will be left to imagination; during winter, the only thing sticking out of the snow is the chimney! This refuge is open from June to September

La montagne et les espaces protégés sont des refuges pour la biodiversité autant que des espaces de ressourcement pour les visiteurs. Malheureusement, la présence massive et prolongée de randonneurs et de bivouaqueurs concourt à transformer durablement ces milieux naturels, préservés jusqu’alors. Ces dernières années, le bivouac et la baignade sont parfois devenus une finalité pour certains visiteurs, avec des conséquences néfastes pour la faune sauvage (source de stress et de modification des comportements) ; abandons de déchets et toilettes sauvages, polluant espaces, cours d’eau et lacs ; et perturbant des habitats remarquables. Ainsi, le bivouac aux lacs Jovet et au Plan Jovet est interdit du 1er Juillet au 31 Août. La baignade est, elle, interdite aux randonneurs et aux animaux de compagnie tout au long de l’année. Pour participer au respect et à la préservation des sites naturels et afin de proposer la meilleure expérience d’une nuit sous les étoiles, les randonneurs doivent déclarer leur nuit en bivouac sur : bivouac.nature-haute-savoie.fr/

Over the "col du Bonhomme" mountain pass, located in the southern part of the reserve,the Aiguilles de la Pennaz mountains rise to the west and Bonhomme Rock to the east. Bonhomme Rock got its name because of its likeness to the shape of a man's face..... You must have seen it, right?

In June 1940, when the French army was losing the war against Hitler's Nazi forces and his Fascist ally Mussolini, the pass where you are standing was the scene of one of the first victories of the free world. A detachment of around thirty men under the command of Lieutenant Bulle defeated the Italians at an altitude of more than 2,600 m and a temperature of -10°, using machine-gun fire from the Italians' rear flank, after having rappelled down the cliff. This success allowed them to recapture Tête de l'Enclave!

From this summit of 2665 metres, admire the breathtaking view of the Mont Blanc Massif, the Haut-Giffre, the Aravis and the Beaufortin. A 360-degree panorama awaits you, but wait, there's more. As a bonus, you can even see the Matterhorn mount in Switzerland under clear skies and in the beautiful autumn sunlight! Take advantage of the orientation table to find out the names of the surrounding peaks... In front of you, the Nature Reserve unfurls its 5,500 hectares of protected areas: forests, mountain pastures, cliffs, high-altitude lakes, glaciers... and almost 3,000 metres of vertical drop.

At an altitude of 2329 metres, the Col du Bonhomme links the Val Montjoie to the Beaufortin, and Haute-Savoie to Savoie. It is one of the passes crossed by the GR 5 trail, the Tour du Mont Blanc and the Tour du Beaufortin. Thanks to its strategic location, this pass has been a crossing point for Romans, peddlers, crystal smiths, and livestock merchants throughout history... In 1860, when Savoie and the Comté de Nice were annexed by France, a free trade zone was established over a large part of northern Savoie, with the pass as one of its boundaries.

At first glance, the slope overlooking Plan Jovet towards the Fours ridge to the south is nothing but rock. However, glaciers buried under a layer of sediment have recently been discovered here! These glaciers are known as "black glaciers", in contrast to "white glaciers". The layer that covers them protects them from the sun, meaning that they are now melting slower than the others.

Asters-CEN74 et ses partenaires du projet Gebiodiv (PITEM Biodiv’alp) ont passé deux jours à restaurer cette portion de GR5 très fréquentée par les randonneurs du tour du Mont-Blanc. Comment restaurer un sentier dégradé ? L’équipe a récolté des graines locales, ratissé les zones à végétaliser et posé du géotextile en fibre de coco pour favoriser la pousse des graines.Aidez-nous à faire durer ce travail ! Sortir des sentiers de randonnée détruit la flore environnante. Telles des cicatrices, les nouvelles sentes favorisent l’érosion et font disparaître la végétation. Soyez vigilants ! Restez sur le sentier principal !

This species, gifted with mimicry, is able to transform its plumage between summer and winter seasons in order to visually become part of its environment. Its name, which means "hare's foot", refers to its foot digits covered by the fuzz in winter! It is one of the most endangered bird species in the Alps. Every year the nature reserves of Haute-Savoie carry out population monitoring in order to study their evolution. The results are shared with the "Observatoire des Galliformes de Montagne".

Au Nord se découpe le rocher du Bonhomme. Aucune faille ne sépare les sédiments du rocher et le socle sur lequel le chemin passe : les sédiments du rocher du Bonhomme forment la couverture autochtone du Mont Blanc. De bas en haut : trias typique des Alpes composé de cargneules, argilites et quartzites, lias inférieur calcaire lui aussi classique. Surmontant le tout, un Lias moyen gréseux, constitué d’éléments érodés du socle, et ayant été altérés (présence d’oxydes et d’hydroxydes de fer) pendant la même période. Cela indique une émersion de ces « grès singuliers » alors qu’ailleurs la région était recouverte par la mer : durant le Lias moyen, le massif du Mont-Blanc était un haut fond.

The "singular sandstones" are rocks found at the northern end of the Les Fours, near the Rocher du Bonhomme. These sandstones were initially described by Horace Bénédicte de Saussure, an 18th-century geologist and one of the founders of mountaineering! Why is this particular stone called this? Because it looked like nothing known at the time! These precious clues prove that only the inner part of the Mont-Blanc massif was formed during the Jurassic period.

This conical mound, which stands around 4m high and has a diameter of 5m, is a burial site. According to a legend dating from the end of the last century, this mound covered the remains of two English ladies who were buried after a terrible storm. It is considered to be cursed, so when passing through the Plan des Dames, it is customary to throw a pebble at the mound to ward off bad luck!

This alternate route via the Col du Four gives us a good opportunity to cross the snow line. On the way up to the Col du Four, you might have noticed that the vegetation is becoming increasingly patchy. The first permanent snow line is around 2700m above ground, at the Col du Four, which marks the area where snow can be seen year-round. Although the vegetation is sparser, it still can be seen: mostly moss and lichen and also other plants such as androsaces, saxifragas and glacier buttercups (visible during the climb). The flora finds shelter from the wind and cold in the crevices of the rocks; some plants grow in the form of a cushion.

As its name suggests, this plant species is found in mild climates in the Northern Hemisphere, but also in the Arctic and in the Alps! It can be recognised by the total absence of leaves and the sparse, blackish flowers in the upper third of the stem. It is a protected species in the Auvergne-Rhône-Alpes region. It is prohibited to pick or otherwise harm this species. It is particularly characteristic of certain alpine environments such as meadows and river banks.