In 1823, Simon Resch and the sheep Toni became the first to reach the East Summit. Simon Resch was also led the second ascent of the East Summit on 18 September 1834 with his son, Johann, and the mountain guide, Johann Barth. Because Resch's first ascent had been doubted, this time a fire was lit on the summit. On the 27th the summit was climbed for a third time by royal forester's assistants, Franz Oberst and Schwepfinger, along with Johann Barth. Oberst erected a flagpole on the summit with a Bavarian flag that was visible from the valley. The first ascent from Austria took place in August 1837. The surveyors, Joseph Feuerstein and Joseph Sonnweber, climbed to the West Summit from Ehrwald and left behind a signal pole with their initials on it. The West Summit was conquered for the third time on 10 September 1843 by the shepherd Peter Pfeifer. He was asked about the route by a group of eight climbers who later reached the summit at the behest of Bavaria's Crown Princess Marie. She had the route checked in preparation for her own ascent of the Zugspitze. On 22 September 1853, Karoline Pitzner became the first woman on the Zugspitze.