For the Austrian land survey of 1853-1854, Hermann van Acken and guides/helpers from the Defereggen valley climbed the mountain in the summer of 1854 from the East and over the NE ridge.
Under "life-threatening conditions", they placed a signal on the 3371/3354 m sub-peak where the summit ridge departs from the watershed (and the current Austrian-Italian border).
A few years later Paul Grohmann interviewed one of the guides, who told him that some of them had continued to the highest summit.
Not able to hire guides, they hiked over the Klammljoch north of the mountain to Rein in Taufers where they found Georg Weiss und Hans Oberarzbacher, who two years earlier had first ascended the Schneebiger Nock, willing to guide them up.
On 3 August 1868 the party reached the main summit over the NW ridge via the Middle Rieserferner.