The first ascent of the peak was made July 30, 1940, by Bradford Washburn, his wife Barbara Washburn, Maynard Miller, Michl Feuersinger, and Thomas Winship.[6] It was the first mountain climbing experience for Barbara, and Bradford would later refer to the expedition as their honeymoon since they had recently married in April. After the expedition she would learn that she was several months pregnant. In 1947 she became the first woman to summit Denali. The months May through June offer the most favorable weather for climbing and viewing.
Climate
Based on the Köppen climate classification, Mount Bertha has a subarctic climate with cold, snowy winters, and mild summers.[7] Weather systems coming off the Gulf of Alaska are forced upwards by the Fairweather Range (orographic lift), causing heavy precipitation in the form of rainfall and snowfall. Winter temperatures can drop below −20 °C with wind chill factors below −30 °C. This climate supports hanging glaciers on its slopes as well as the immense Brady Glacier to the south, Reid Glacier to the northeast, and Johns Hopkins Glacier to the northwest. Precipitation runoff and meltwater from its glaciers drains into Glacier Bay and the Gulf of Alaska.
Gallery
Mt. Crillon (left) and Mt. Bertha (right) seen from park headquarters
Bertha's summit detail, from northwest
Bertha upper left with Mt. Crillon and Johns Hopkins Glacier. by Austin Post 1973
^Bradford Washburn with Lew Freedman, Bradford Washburn An Extraordinary Life The Autobiography of a Mountaineering Icon, 2005, Westwinds Press, chapter 12.
^Peel, M. C.; Finlayson, B. L.; McMahon, T. A. (2007). "Updated world map of the Köppen−Geiger climate classification". Hydrol. Earth Syst. Sci. 11. ISSN1027-5606.