This is a popular alpine climbing route which is generally considered to be extreme. It's extremely remote, it features extreme exposure and is typically done between February and April. From a low point of 1.7 km to the maximum altitude of 3.3 km, the route covers 18 km, 2183 vertical metres of ascent and 2181 vertical metres of descent. You'll need bivy kit, crampons and 2 ice axes to complete it safely.