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Hazards
Mountaineering on the Aoraki Mount Cook massif is a hazardous activity. Although technically the “easiest” route on Aoraki Mount Cook, the Linda Glacier has a relatively high level of objective hazard (a natural hazard that we cannot control, only minimise). The route is exposed in numerous places to avalanches, rockfall, and ice-fall danger from above.
It is essential that your fitness, ability, and conditions allow you and your guide to move quickly through these hazardous zones.
The guide’s primary concern is always for safety. Your guide’s appraisal of your competence and route conditions will determine whether the climb can be attempted, or an alternative ascent is considered instead.
From December onwards, the route can become heavily crevassed, before eventually becoming impassable. Crevassing may slow travel through areas threatened by ice avalanches, and can be unacceptable from a safe guiding perspective.
Fitness
A very high level of aerobic fitness is required for Aoraki Mount Cook. You must be able to climb 1,000 vertical metres with an 8 kg backpack in 3.5 hours or less.
Technical Experience
A successful ascent of Aoraki requires proven climbing proficiency, excellent physical fitness, and recent alpine experience. Only return guests are accepted.
Climbing Routes
The most commonly guided route is the Linda Glacier and North-East Ridge from Plateau Hut. This is a long and serious climb, usually taking 15-18 hours, return. The height gain is approximately 1,700m/5,500 ft from Plateau Hut.
Probably around 80% of all ascents (and 90% of descents), both guided and recreational, use the Linda Glacier route. The Linda Glacier is the most straightforward route and offers the best chance to reach the high peak. The Linda Glacier route is always challenging, and not to be underestimated.
The Linda Glacier is relatively low-angled. Up to the Linda Shelf, there is an objective hazard from ice cliffs on Mt Silberhorn and rockfall off Mount Vancouver. A steady and efficient pace must be maintained to minimise risk.
To reach the Linda Shelf the “Gun Barrels” must be traversed, and on the shelf itself, the “Mini Gun Barrels” crossed. Both areas are subject to danger from falling ice debris. Steady, rapid movement is required in these places.
You will normally be moving together with your guide until the Linda Shelf steepens. The last 50 to 100 metres is pitched climbing, on 40° to 45° ice up to the base of the Summit Rocks. We try to be at this point just after dawn.
The Summit Rocks are normally iced up but can be a rock climbed in the mid-late season, or in dry conditions. Three or 4 pitches are belayed to the summit ice cap.
Conditions on the ice cap vary, from soft snow/ice to solid “boilerplate” ice. This section to the summit can be time-consuming, and always requires concentration and care. Usually, it is only necessary to belay short sections.
After 8-10 hours of climbing the view is indescribable, stretching for hundreds of kilometres up and down the Alps, to the Tasman Sea and the Pacific Ocean.
The descent (by the same route) usually takes 7-10 hours. The descent requires concentration and good crampon technique down the ice cap. Your guide will lower you through the Summit Rocks.
Speed through the Gun Barrel section is essential, as warmer temperatures will soften the snow, increasing the risk of avalanches and rockfall.
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