The Silver Saddle (Silbersackel) is about halfway in-between Rakhiot Peak and Nanga Parbat summit. The south/southeast side of the mountain is dominated by the Rupal Face, often referred to as the highest mountain face in the world: it rises an incredible 4,600 m (15,000 feet) above its base. The north/northwest side of the mountain, leading to the Indus, is more complex. It is split into the Diamir (west) face and the Rakhiot (north) face by a long ridge. There are a number of subsidiary summits, including the North Peak (7816m) some 3 km north of the main summit.