@himalayanmountaineering: The Bottleneck on K2 is dangerous because it lies under huge, unstable ice seracs that can collapse without warning. It’s a steep, narrow section at high altitude (above 8,000m) with no room for error, and climbers are exposed to both falling ice and fatal drops. Guided by @climberningmadorje #k2 #karakoram #pakistan #himalayanmountaineering #mountaineering #alpinism #outdoor #mountainguide #expedition