In 1946 a drilling project was initiated to carve a tunnel through the mountain. The Mont Blanc tunnel would connect "Chamonix, "France and "Courmayeur, "Italy and become one of the major trans-Alpine transport routes between the two countries. In 1965 the tunnel opened to vehicle traffic with a length of 11,611 metres (7.215 mi).
In 1999 a transport truck caught fire in the tunnel beneath the mountain. In total 39 people were killed when the fire raged out of control. The tunnel was renovated in the aftermath to increase driver safety, reopening after three years.
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The summit of Mont Blanc is a thick, perennial ice and snow dome whose thickness varies. No exact and permanent summit elevation can therefore be determined, though accurate measurements have been made on specific dates. For a long time its official elevation was 4,807 m (15,771 ft). In 2002, the "IGN and expert surveyors, with the aid of "GPS technology, measured it to be 4,807.40 m (15,772 ft 4 in).
After the "2003 heatwave in Europe, a team of scientists re-measured the height on 6 and 7 September. The team was made up of the glaciologist Luc Moreau, two surveyors from the GPS Company, three people from the "IGN, seven expert surveyors, four mountain guides from "Chamonix and "Saint-Gervais and four students from various institutes in France. This team noted that the elevation was 4,808.45 m (15,775 ft 9 in), and the peak was 75 centimetres (30 in) away from where it had been in 2002.
After these results were published, more than 500 points were measured, to assess the effects of climate change and the fluctuations in the height of the mountain at different points. Since then, the elevation of the mountain has been measured every two years.
The interpretation that the heatwave had caused this fluctuation is disputed because the heatwave is known not to have significantly affected the glaciers above 4,000 m (13,000 ft). The height and position of the summit could have been moved by general glacial forces. At this elevation, the temperatures rarely rise above 0 "°C (32 "°F). During the summer of 2003, the temperature rose to 2 °C (36 °F), and even 3 °C (37 °F), but this would not have been enough for the ice to melt that amount.
The summit was measured again in 2005, and the results were published on 16 December 2005. The height was found to be 4,808.75 m (15,776 ft 9 in), 30 cm (12 in) more than the previous recorded height. The rock summit was found to be at 4,792 m (15,722 ft), some 40 m (130 ft) west of the ice-covered summit.
In 2007 the summit was measured at 4,807.9 m (15,774 ft) and in 2009 at 4,807.45 m (15,772 ft). In 2013 the summit was measured at 4,810.02 m (15,781 ft) and in 2015 at 4,808.73 m (15,777 ft). From the summit of Mont Blanc on a clear day, the "Jura, the "Vosges, the "Black Forest and the "Massif Central mountain ranges can be seen, as well as the principal summits of the Alps.
The Mont Blanc Massif averages nearly 100 fatalities a year. A published estimate suggests there have been 6,000-8,000 alpinist fatalities in total, more than on any other mountain.:208 Several classic climbing routes lead to the summit of Mont Blanc:
- The most popular route is the Voie Des Cristalliers, also known as the Voie Royale. Starting from "Saint-Gervais-les-Bains, the "Tramway du Mont-Blanc (TMB) is taken to get to the fr:Gare du Nid d'Aigle. The ascent begins in the direction of the "Refuge de Tête Rousse and through the Goûter Corridor, considered dangerous because of frequent rock-falls, leading to the Goûter cabin for night shelter. The next day the route leads to the "Dôme du Goûter, past the emergency Vallot cabin and L'arrête des Bosses.
- La Voie des 3 Monts is also known as La Traversée. Starting from "Chamonix, the "Téléphérique de l'Aiguille du Midi is taken towards the Col du Midi. The Cosmiques cabin is used to spend the night. The next day the ascent continues over "Mont Blanc du Tacul and "Mont Maudit.
- The historic itinerary through the Grand Mulets, which is most frequently traversed in winter by ski, or in summer to descend to Chamonix.
- The normal Italian itinerary is also known as La route des Aiguilles Grises. After crossing the "Miage Glacier, climbers spend the night at the "Gonella refuge. The next day one proceeds through the Col des Aiguilles Grises and the Dôme du Goûter, concluding at L'arête des Bosses (Bosses ridge).
- The Miage — Bionnassay — Mont Blanc crossing is usually done in three days, and has been described as a truly magical expedition of ice and snow aretes at great altitude.:199 The route begins from Contamines-Montjoie, with the night spent in the Conscrits cabin. The following day, the Dômes de Miages is crossed and the night spent at the Durier cabin. The third day proceeds over "l'Aiguille de Bionnassay and the Dôme du Goûter, finally reaching the summit of Mont Blanc via the Bosses ridge.
- Refuge Vallot, 4362 m.
- Refuge Goûter, 3817 m.
- Bivouac Corrado Alberico - Luigi Borgna, 3684 m.
- Refuge Cosmiques, 3613 m.
- Refuge Tête Rousse, 3167 m.
- Refuge Francesco Gonella, 3071 m.
- Refuge Grands Mulets, 3050 m.
Impacts of climate change
Recent temperature rises and heatwaves, such as that of summer 2015, have had significant impacts on many climbing routes across the Alps, including those on Mont Blanc. For example, in 2015, the Grand Mulets route, previously popular in the 20th century, was blocked by virtually impenetrable crevasse fields, and the Gouter Hut was closed by municipal decree for some days because of very high stonefall danger, with some stranded climbers evacuated by helicopter.
Exploits and incidents
- 1786: The first ascent, by "Michel-Gabriel Paccard and "Jacques Balmat; see "Exploration of the High Alps.
- 1787: The fourth ascent, by Englishman "Mark Beaufoy, with at least six guides and a servant.
- July 1808The first ascent by a woman, "Maria Paradis, with Balmat as her guide.:
- July 1838The second ascent by a woman, "Henriette d'Angeville.:
- 1890: Giovenni Bonin, Luigi Grasselli and Fr. Achille Ratti (later "Pope Pius XI) discovered the normal Italian route (West Face Direct) on descent.
- 1960: The airplane pilot Henri Giraud landed on the summit, which is only 30 m (98 ft) long.
- 1990: The "Swiss Pierre-André Gobet, leaving from "Chamonix, completed the ascent and descent in 5 hours, 10 minutes and 14 seconds.
- 30 May 2003"Stéphane Brosse and "Pierre Gignoux tried to beat the record by ski-walking. They went up in 4 hours and 7 minutes, and came back down in 1 hour and 8 minutes. In total they did the ascent and descent in 5 hours and 15 minutes.:
- 13 August 2003Seven "French paraglider pilots landed on the summit. They reached a peak altitude of 5,200 m (17,100 ft), thanks to the hot weather conditions, which provided strong hot air currents. Five had left from Planpraz, one from "Rochebrune at "Megève and the last one from "Samoëns.:
- 8 June 2007Danish artist "Marco Evaristti draped the peak of Mont Blanc with red fabric, along with a 20-foot (6.1 m) pole with a flag reading "Pink State". He had been arrested and detained earlier on 6 June for attempting to paint a pass leading up to the summit red. His aim was to raise awareness of environmental degradation.: 
- 13 September 2007A group of 20 people set up a hot tub at the summit.: 
- 19 August 2012Fifty paraglider pilots landed on the summit, beating the previous record of 7 top landing pilots, set in 2003. This included the second ever tandem landing on the summit.: 
- 11 July 2013 - "Kilian Jornet beat the fastest overall time for ascent and descent with 4 hours 57 minutes and 40 seconds.
Cinema and television
- La Terre, son visage, is a documentary by Jean-Luc Prévost and published by Édition Société national de télévision française, released in 1984. It is part of the Haroun Tazieff raconte sa terre, vol. 1 series. In it he talks about the west-east crossing of Mont Blanc.
- The film "Malabar Princess.
- The television-film Premier de cordée.
- "Storm over Mont Blanc (Stürme über dem Mont Blanc, 1930) with "Leni Riefenstahl and directed by "Arnold Fanck
- "La Roue (The Wheel, 1923) is a 273-minute film by "Abel Gance depicting rail operations, workers, and families in southeastern France, including the Mont Blanc area.
- Premier de cordée by Roger Frison-Roche
- Hugo et le Mont Blanc by Colette Cosnie – Édition Guérin
- Hymn Before Sunrise, in the Vale of Chamouni by "Samuel Taylor Coleridge
- "Frankenstein by "Mary Shelley
- "Mont Blanc by "Percy Shelley
- "Point Blanc by "Anthony Horowitz
- "The Prelude Book VI by William Wordsworth
- Kordian by "Juliusz Słowacki
- "Eiger Dreams: Ventures Among Men and Mountains by "Jon Krakauer
- Running Water by "AEW Mason
- La neige en deuil by "Henri Troyat
The Mont Blanc massif is being put forward as a potential "World Heritage Site because of its uniqueness and its cultural importance, considered the birthplace and symbol of modern mountaineering. It would require the three governments of "Italy, "France and "Switzerland to make a request to "UNESCO for it to be listed.
Mont Blanc is one of the most visited tourist destinations in the world, and for this reason, some view it as threatened.["citation needed] Pro-Mont Blanc (an international collective of associations for the protection of Mont Blanc) published in 2002 the book Le versant noir du mont Blanc (The black hillside of Mont Blanc), which exposes current and future problems in conserving the site.
In 2007, Europe's two highest toilets (at a height of 4,260 metres, 13,976 feet) were taken by helicopter to the top of Mont Blanc. They are also serviced by helicopter. They will serve 30,000 skiers and hikers annually, helping to alleviate the discharge of urine and faeces that spreads down the mountain face with the spring thaw, and turns it into 'Mont Marron'.
"Global warming has begun to melt glaciers and cause avalanches on Mont Blanc, creating more dangerous climbing conditions.
The highest resolution panorama of the Mont Blanc ever made: "in2white".
"Mer de Glace glacier on the left
Mont Blanc seen from "SPOT satellite
"Aerial view of the south-western side of Mont Blanc in early September, taken on a commercial flight
- "Exploration of the High Alps
- "Haute Route
- "Mont Blanc (Moon)
- "Mont Blanc glacier flood
- "Mont Blanc massif
- "Mont Blanc Tramway
- "Mont Blanc Tunnel
- "Tour du Mont Blanc
- "Top of the Mont Blanc
- "Le Mont-Blanc passe de 4.810 mètres à 4.808,7 mètres".
- Although "Mount Elbrus is normally considered the highest mountain in Europe, the latter continent is part of the "Eurasian land mass, which culminates at Mount Everest (lowest col between Mont Blanc and Mount Elbrus: 113 m ; lowest col between Mount Elbrus and Mount Everest: 901 m ).
- The Caucasus watershed has conventionally been used as the "boundary between Europe and Asia since the mid 19th century. The Caucasus has a number of peaks higher than Mont Blanc either marking the "Russian-Georgian border or just within Russia ("Mount Elbrus in the "North Caucasus at 5641 m is the highest peak in Europe when including the Caucasus).
- Mont Blanc shrinks by 45cm in two years
- the prominence of 4,696 m for Mont Blanc is taken from the "Ultras Project" (peaklist.org), "List compiled 2004 by Petter Bjørstad, Jonathan de Ferranti, Eberhard Jurgalski, Vasja Kavcic and Aaron Maizlish". A footnote to this entry at peaklist.org r (Citation). The Mont Blanc key saddle has been identified in Northern Russia near "Ozero Onezhskoye." See also "list of Alpine peaks by prominence.
- Green, Stewart. "Facts About Mont Blanc — Highest Mountain in Western Europe". "About.com. Retrieved 7 August 2011.
- Muza, SR; Fulco, CS; Cymerman, A (2004). "Altitude Acclimatization Guide.". US Army Research Inst. of Environmental Medicine Thermal and Mountain Medicine Division Technical Report (USARIEM-TN-04-05). Retrieved 5 March 2009.
- Cymerman, A; Rock, PB. "Medical Problems in High Mountain Environments. A Handbook for Medical Officers". USARIEM-TN94-2. US Army Research Inst. of Environmental Medicine Thermal and Mountain Medicine Division Technical Report. Retrieved 5 March 2009.
- La disfida del Monte Bianco(in Italian).
- Historical map
- The map is based on measurements taken in 1856 before the convention of 7 March 1861, and is identical to the map attached to the Treaty of Turin. See "IGN
- Assemblée Nationale: traité franco-italien signé à Turin le 26 mars 1860
- ""Image:1823 Mont Blanc 1.jpg
- Janssen et l'observatoire du sommet du mont Blanc (1893-1909), JM. Malherbe, Observatoire de Paris, section de Meudon
- The glacier des Bossons : plane crashes:
- BBC on this day 24 January 1966: 117 die in Air India tragedy
- Diplomatic bag contents revealed
- Timeline of the Mont Blanc Tunnel
- Mont Blanc Tunnel at age 46
- Vincent, Christian (2 August 2004). "The rock summit of the Mont Blanc, 40 m west of the ice summit". Centre National de la Recherche Scientifique. Archived from the original on 2 May 2013. Retrieved 29 April 2015.
- Helmut Dumler and Willi P. Burkhardt, The High Mountains of the Alps, London: Diadem, 1994
- Routes description, from camptocamp.org
- Boscoe, Charlie. "How to Climb Mont Blanc - The Two Easiest Routes". www.ukclimbing.com. Retrieved 9 November 2015.
- File:Le-Grand-Couloir.jpg – Wikimedia Commons
- Gaventa, Jonathan. "The Ice and the Canary: A Story of Alpine Climbing in a Changing Climate". www.ukclimbing.com. Retrieved 9 November 2015.
- Danish Artist Drapes Mont Blanc in Red, 8 June 2007
- Jaccuzzi ["sic] on Mont-Blanc summit["self-published source?]
- , ’50' pilots topland Mont Blanc as Chamonix sees record day, XC Mag, 19 August 2012
- Extraordinary Speed Record on Mont Blanc
- Mont-Blanc Speed Record: Ascent and Descent On Foot
- "Massif du Mont Blanc". UNESCO World Heritage Centre. Retrieved 10 January 2011.
- "Europe's highest toilet". Ananova. Archived from the original on 8 December 2008. Retrieved 20 August 2011.
- "Warming threatens safety on Mont Blanc". The Times. London. 28 May 2013.
|""||Wikimedia Commons has media related to Mont Blanc.|
- Mont Blanc on French IGN map portal
- Mont Blanc at 4000er.de (in German)
- Places to visit around Mont Blanc
- Mont-Blanc summit webcam: Close up of the summit of the Mont Blanc and its glaciers at 4811m.
- Mont-Blanc panoramic webcam: See severals points of view of the Mont-Blanc range and zoom on the top.
- Mont Blanc on Peakware
- Mont Blanc on Summitpost
- Descent into the Ice Companion web site to the PBS NOVA program which follows a glaciologist and a climber into the glacier caves of Mont Blanc
- Chamonix-Mont-Blanc Map
- The scientific observatories on Mont Blanc.
- Why Is Mont Blanc One of the World's Deadliest Mountains?
- Mont Blanc on Peakclimber
- Chisholm, Hugh, ed. (1911). "Blanc, Mont". "Encyclopædia Britannica (11th ed.). Cambridge University Press.