Explanation:

The LOC is a 450 mile-long military control line which serves as a frontier slicing the disputed Indian and Pakistani governed parts of Kashmir into two. The line is covered in most parts with heavy coils of barbed wire– a fence put in place by India–and dotted with Indian and Pakistani check-posts. According to the United Nations, the LOC came into effect in July 1972, after India and Pakistan fought a war that began in 1971. They signed the Simla Agreement to define what was previously called the “ceasefire line.” The LOC isn’t a legally recognized boundary because it was meant to be a provisional international border which was agreed upon by both countries in the 1972 agreement. The unsettled nature of the border has kept the conflict between India and Pakistan alive over 69 years since independence from British colonial rule.

Further Readings:

https://in.reuters.com/article/kashmir-border/factbox-line-of-control-between-india-and-pakistan-idINDEL18181520081020