Mont Jalla, Limestone mountain peak in Isère, France
Mont Jalla is a 635-meter limestone summit at the southern edge of the Chartreuse massif. The peak features a flat top and rises above the Grenoble urban landscape.
From 1869 until the early 20th century, a téléphérique carried limestone from the summit of Mont Jalla to the cement works at the Porte de France. The stone came from about 18 stacked galleries linked by shafts, and the remains of the cableway's upper station still stand near the top.
Since 2000 the summit has held the national memorial of the French mountain troops (troupes de montagne), installed on the flat top reached by the paths from the Bastille. The monument marks the link between this limestone spur of the Chartreuse and the units trained for alpine warfare.
The summit is a 30-minute walk from the upper cable car station or from Mas Caché in Saint-Martin-le-Vinoux. From the Col de Vence on the Grenoble–Le Sappey road, the GR 9 trail reaches the top in about 1 hour 45 minutes.
Near the summit, the remains of the upper station of the téléphérique opened in 1869 are still visible; it carried limestone down to the cement works at the Porte de France until the early 20th century. The stone was loaded into wagonlets that ran out to the kilns in Saint-Martin-le-Vinoux.
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