Khardung La's historical significance lies in its role as a trade route between Leh and Central Asia. Before modern roads, it was traversed by caravans carrying goods across the challenging terrain. Its strategic importance increased during the 20th century, particularly after the Indo-Pakistani conflicts, as it became a vital supply route for Indian troops stationed in the Siachen Glacier region. The Border Roads Organisation (BRO) played a crucial role in developing and maintaining the road through Khardung La, enabling vehicular access and boosting tourism in the region. The pass remains a testament to human ingenuity and resilience in the face of extreme natural conditions.