The first crossing from the West to the East Summit was achieved in 1857 by Dr. Härtringer from Munich and mountain guide, Joseph Ostler. The Irish brother, Trench, and Englishman, Cluster, succeeded in climbing the West Summit on 8 July 1871 through the Austrian Cirque (Österreichische Schneekar) under the guidance of brothers, Joseph and Joseph Sonnweber. The route through the Höllental valley to the Zugspitze was first used on 26 September 1876 by Franz Tillmetz and Franz Johannes with guides, Johann and Joseph Dengg. The first winter ascent of the West Summit took place on 7 Januar 1882; the climbers being Ferdinand Kilger, Heinrich Schwaiger, Josef and Heinrich Zametzer and Alois Zott. The Jubilee Arête (Jubiläumsgrat) was first crossed in its entirety on 2 September 1897 by Ferdinand Henning. The number of climbers on the Zugspitze rose sharply year on year. If the summit had been climbed 22 times in 1854, by 1899 it had received 1,600 ascents. Before the construction of a cable car in 1926 there had already been over 10,000 ascents.