South East Rib

This route is immediately south of the East Buttress and is reached via a traverse from McCoy Col to the col linking the glacier basin at the head of the Lyell Glacier with Heim Plateau. At the start of the route, bypass a 15-metre buttress via a steep gully on the left, and head diagonally across to a well-defined rib which tops the buttress. Follow the rib on loose rock to the summit ridge and eventually join the East Buttress route from Heim Plateau.