Sosbun Brakk
A Granite Symmetry
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Sosbun Brakk is a granite tower of 6413m, emerging dramatically above flat ice sheet of Biafo Glacier. Sosbun Brakk was first climbed in 1983 by a Japanese expedition. It also hides Sokha Pass in its shoulders - connecting Snow Lake to Basha valley; shortest route to Snow Lake Trek. Sosbun Brakk is quite symmetric with twin granite towers piercing the blue skies are placed right at the curve of Snow Lake on Biafo Glacier. Its sheer prominence from Snow Lake is quite picturesque and at the same time equally difficult to capture.
Four chapters
Best Time to Visit
spring
April – May
Poor timeBiafo-Hispar traverse snowbound at 4,900m — glacier still fractured, expeditions rarely attempt this window.
summer
June – August
Best timeThe only viable expedition window — long days, stable weather over the Biafo, Hispar and Snow Lake plateau.
autumn
September
ShoulderColder nights and first snow arrive — late-season teams still get clear days but weather turns fast.
winter
October – March
Poor timeDeep snow shuts the traverse — glacier crevasses, storms and no viable approach until late June.