North Rib

Also known as the Biscuit Tin route. From the access route over Harper Saddle to the upper La Perouse névé, ascend good rock on the face to the right of the rib, following the line of least resistance onto the rib itself. The rib steepens towards the top (crux 14/15). Then follow a flattening ridge for 250m to join the top of the couloir on the Curtain Route.