 After their first trip to the Himalaya and subsequent labor problems, the Workmans hired Matthias Zurbriggen, the best and most experienced mountain climbing guide of the time.Thus, in 1899, with 50 local porters and Zurbriggen, the Workmans began to explore the Biafo Glacier in the Karakoram, but dangerous crevasses and poor weather forced them instead to shift to the Skoro La Glacier and the unclimbed peaks around it.They reached Siegfriedhorn, an 18,600-foot (5,700 m) summit that she named after her son, giving Fanny an altitude record for women at the time.