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The elevation of a mountain is an important statistic that tells us how high the mountain's summit is in relation to the mean sea level of Earth. Elevation is most commonly measured in feet or meters, and the elevation of a mountain can change over time due to erosion, weathering, or seismic activity. It's important to note the difference between elevation and prominence, with the latter term being used to describe the height of a mountain from the contour line at its base to its highest point. The elevation of Mont Blanc is 15,777 feet (4,808.7 m), while the prominence of Mont Blanc is 15,407 feet (4696 m).
The official elevation of Mont Blanc was long given as 15,771 feet (4,807 m), with other readings being established over time, but advances in measuring techniques and technology have established the official height at 15,777 feet (4,808.4 m). Various key locations and huts along the climbing route of Mont Blanc include the Refuge Vallot, which is situated at an elevation of 14,311 feet (4,362 m), the Cosmiques Hut, which is situated at an elevation of 11,854 feet (3,613 m), the Tete Rousse Hut, which is located at an elevation of 10,390 feet (3,167 m), and the Grands Mulets Refuge, which is located at an elevation of 10,007 feet (3,050 m).
Mont Blanc is situated in both Italy and France. The average elevation in Italy is 1,765 feet (538 m), while the average elevation in France is measured at 1,230 feet (375 m). The second highest mountain in Italy is Grenzgipfel, which is located in the Monte Rosa Massif at the border between Italy and Switzerland. Grenzgipfel has an elevation of 15,151 feet (4,618 m). The second highest point in France is the Barre des Ecrins, located in the French Alps at an elevation of 13,458 feet (4,102 m).