Bottleneck (K2) Bottleneck (K2) The Bottleneck is a location along the South-East Spur, known also as Abruzzi Spur— the most used route to the summit of K2, the second-highest mountain in the world, in the Karakoram, on the border of Pakistan and China. The Bottleneck is a narrow couloir, which is overhung by seracs from the ice field east of the summit. The couloir is located only 400m below the summit, and climbers have to traverse about 100m exposed to the seracs to pass it. Due to the height (8200m) and the steepness (50-60 degrees) this stretch is the most dangerous part
Hole in the Mountain Peak dangerous. Instead, make your way up to Hole in the Mountain Peak, located a short distance to the north and an easier climb, and then make the approach to the window from the west side of the mountain. Hole in the Mountain Peak Hole in the Mountain Peak is the highest mountain in the East Humboldt Range of mountains in Elko County, Nevada, United States. It is the thirty-fifth highest mountain in the state, and also ranks as the eleventh-most topographically prominent peak in the state. It is located within the East Humboldt Wilderness of the Humboldt-Toiyabe National Forest and