Siachen glacier

The Siachen glacier is the highest battleground on earth,^[6][7] where India and Pakistan have fought intermittently since April 13, 1984. Both countries maintain permanent military presence in the region at a height of over 6,000 metres (20,000 ft). More than 2000 people have died in this inhospitable terrain, mostly due to weather extremes and the natural hazards of mountain warfare.
The conflict in Siachen stems from the incompletely demarcated territory on the map beyond the map coordinate known as NJ9842. The 1972 Simla Agreement did not clearly mention who controlled the glacier, merely stating that from the NJ9842 location the boundary would proceed "thence north to the glaciers." UN officials presumed there would be no dispute between India and Pakistan over such a cold and barren region.^[8]