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The Aiguille de Bionnassay (el. 4052 m./13,294 ft.) is a mountain in the Mont Blanc massif of the Alps in France and Italy. It is an elegant satellite peak on the western side of Mont Blanc, and the mountain's south and east ridges form the frontier between the two countries. Its summit is a knife-edge crest of snow and ice, and reaching it via any route provides a ''"splendid and serious snow and ice climb"''.〔 ==Glaciers== Three significant glaciers originate on the slopes of the mountain: The Glacier de Bionnassay, the Glacier de Bionnassay Italien, and the Glacier de Miages. The Glacier de Bionnassay is the most obvious glacial feature, arising on the north and north-west slopes of the Aiguille de Bionnassay as well as from the western side of the Dôme du Goûter and the Aiguille du Goûter. It descends for approximately 4.5 km, flowing north-westwards before turning north at the foot of the Nid d'Aigle to end some distance above the settlement of Bionnassay, continuing as the Torrent de Bionnassay. This hanging glacier on the north-west face of the Aiguille de Bionnassay provides a route of access for mountaineers with ice-climbing skills. The Glacier de Bionnassay Italien arises from a cirque between the south eastern side of the Aiguille de Bionnassay, the Col de Bionnassay and the Calotte des Aiguille Grises. It descends south-south west for 2.5 km below the Col Infranchissible then turns south-east to merge with other glaciers, thence continuing as the Glacier du Miage (Ghiacciaio del Miage) - a total distance of approximately 9 km, forming the longest glacier in Italy. The Glacier de Miages - not to be confused with the much larger Glacier du Miages on the Italian side (see above) - forms from snows collecting between the Aiguille de Tricot and the south-western face of the Aiguille de Bionnassay. The glacier descends in a south-westerly direction for approximately 2.5 km. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Aiguille de Bionnassay」の詳細全文を読む スポンサード リンク
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