What is the most common climbing route for the second highest mountain in the world, K2?

The Abruzzi Spur route is considered the most common climbing route for the second highest mountain in the world, K2, because it provides a relatively safe and direct path to the summit. It was first established during the 1954 Italian expedition and has since been used by many climbers attempting to reach K2's summit. The route offers a mix of technical climbing challenges, including steep ice and rock sections, making it appealing to experienced mountaineers. Additionally, the Abruzzi Spur provides crucial elements such as fixed ropes and campsites, which facilitate the logistics of climbing the mountain. Although it still poses significant risks and requires a high level of skill and experience, the Abruzzi Spur has become the most preferred and frequently chosen route to climb K2.