
Under Ogre’s Thumb
Marphogoro lies underneath a huge rock tower of Ogre Thumb, at an elevation of 4400m it is quite distinguishable by red coloured rock above it. It offers views of Sokha La over the Sosbun Brak - leads to Sokha Glacier and the Bash valley. Sokha Pass is a steep snow slope on both sides and should be attempted by those with mountaineering experience and equipment.
April – May
Poor timeBiafo-Hispar traverse snowbound at 4,900m — glacier still fractured, expeditions rarely attempt this window.
June – August
Best timeThe only viable expedition window — long days, stable weather over the Biafo, Hispar and Snow Lake plateau.
September
ShoulderColder nights and first snow arrive — late-season teams still get clear days but weather turns fast.
October – March
Poor timeDeep snow shuts the traverse — glacier crevasses, storms and no viable approach until late June.