The Hoher Tenn was first ascended, according to unconfirmed sources, in the 1840s by Cardinal Frederick, Prince of Schwarzenberg with a small company (in kleiner Gesellschaft). The first documented crossing of both summits was on 16 August 1871 by the furrier, Albert Kaindl, from Linz and Josef Pöschl from Vienna with mountain guide, Johann Grill, known as the Kederbacher. That said, the party found trigonometric signs on both peaks that must have been made in the 1850s as part of the state survey.