CR Adventures 230722: Grand Hotel Du Montenvers y Le Signal Forbes y Refuge du Plan de Aiguille y Grand Balcón Nord

The hike starts from the mythical Grand Hotel Du Montenvers - A La Mer De Glace: A refuge steeped in history and authenticity
Only accessible via the red cogwheel train linking Chamonix to the Mer de Glace. The journey took 20 minutes and was 5 kilometres with 900 meters of vertical ascent. The alternative is hiking from Chamonix some 900 meters below.
We take the trail leading to Le Signal Forbes
offering spectacular views of the Mer de Glacé glacier.
We continue along the trail eventually pick up Grand Balcón Nord a trail with stunning views along the Chamonix valley with the Mont Blanc massif to our left.
As we progress along the trail Mont Blanc comes into full view and the views are spectacular. We finally reach our destination at the Refuge du Plan de Aiguille perched high above the Chamonix valley for a well earned rest and a spot of lunch before our return trip to the hotel via the Grand Balcón Nord route.

A little bit about the area:

Perched on the Mont-Blanc massif, the Terminal Neige – Refuge du Montenvers was erected in 1880 to welcome the adventurers of the time.
The Refuge du Montenvers exudes old-fashioned charm in its 17 rooms, suites and dormitories.
A journey into the past, a tribute to the architectural and historical heritage of Montenvers, which has been witness to the greatest mountain climbers, adventurers, famous artists and writers. If the walls could speak, they would share many secrets about the history of this great building.

To go to the Refuge du Montenvers, a 30 minutes trip aboard the little red train is waiting for you. Destination: 1913 m altitude at the foot of the famous Mer de Glace. You will find in this refuge Made in Mont Blanc a deliciously old atmosphere, a place of sharing, authenticity and homecoming!

Built in 1880 to accommodate the first mountaineers and travelers who came to visit the Mer de Glace, it displays a sober granite façade, dotted by many small windows.
After a renovation, the historical charm of the site, as well as the “refuge” spirit seep into the unconscious of each visitor under the name Refuge du Montenvers: inviting a place of sharing, authenticity and homecoming.
If you’ve always dreamt of having a mountain all to yourself and adding a little sparkle to your life, then take your other-half on a passionate mountain-top escapade.

The destination is sure to surprise. Perched high up in the mountains, you discover the famous Mer de Glace and its Ice Cave. The dream continues at this intimate refuge imbued with tranquillity and serenity.

The Mer de Glace ("Sea of Ice") is a valley glacier located on the northern slopes of the Mont Blanc massif, in the French Alps. It is 7.5 km long and 200 metres (660 ft) deep but, when all its tributary glaciers are taken into account, it can be regarded as the longest and largest glacier in France, and the second longest in the Alps after the Aletsch Glacier.

The glacier lies above the Chamonix valley. The pressure within the ice is known to reach at least 30 atmospheres.
The Mer de Glace can be considered as originating at an elevation of 2,100 metres (6,900 ft), just north of the Aiguille du Tacul, where it is formed by the confluence of the Glacier de Leschaux and the Glacier du Tacul. The former is fed by the Glacier du Talefre, whilst the latter is, in turn, fed by the Glacier des Periardes, the vast Glacier du Géant and the broad icefields of the Vallee Blanche. The Glacier du Tacul supplies much more ice than the Glacier de Leschaux.
Mer de Glace, circa 1870
However, if the Mer de Glace is considered in its broadest sense (i.e. from source to tongue), it is a compound valley glacier, gaining ice from snowfields that cover the heights directly north of Mont Blanc at an altitude of around 4,000 metres. It flows for a total distance of 12 kilometres, covering an area of 32 square kilometres in the central third of the Mont Blanc massif.

From the Aiguille du Tacul, the Mer de Glace flows north-north-west between Aiguille du Moine on the east and Trélaporte on the west. It descends below Montenvers, at which point it is approximately 0.5 km wide, and descends to approximately 1,500 metres (4,900 ft). The glacier was once easily visible from Chamonix but has been shrinking backwards, and is now barely visible from below.
The surface topography of the Mer de Glace changed very little during the first third of the 20th century, but from 1939 to 2001 the surface of the glacier has lowered an average of 30 cm each year, corresponding to an equivalent loss of 700 million cubic metres of water. Mer de Glace, 2011
When the tension in the ice increases as the slope increases, the glacier is unable to deform and crevasses appear. These are notably transversal and, when there is intense crevasse activity on the steepest terrain, blocks of seracs appear as the glacier breaks up. Crevasses are of variable depth, depending on their position, and may be as deep as fifty metres. Seracs always form in the same places, namely the steepest sections over which the glacier flows. As crevasses open and seracs tumble downstream, the supply of ice is renewed by the constant flow from upstream. Broad banding patterns, visible on the surface of the Mer de Glace, are known as ogives, or Forbes bands, and result from differences in summer and winter collapse rates of the serac fields. It was on 24 July 1842 that Scottish physicist James David Forbes observed the pattern of light and dark dirt bands on the Mer de Glace from the nearby Charmoz and began to consider whether glaciers flowed in a similar fashion to a sluggish river and with a viscous or plastic manner.
John Tyndall explored the glacial tributaries feeding Mer de Glace in 1857
In the 18th and 19th centuries the glacier descended all the way down to the hamlet of Les Bois, where it was known as Glacier des Bois. At that time the river Arveyron emerged from the glacier under a grotto-like vault (grotte d'Arveyron) and, through the accounts of early writers and explorers,attracted many more visitors, painters and later photographers, for example Joseph Mallord William Turner's "Source of the Arveron in the Valley of Chamouni Savoy", 1816. The position of its front end fluctuated over the years but its maximum extent was in the mid-19th century.