Bilafond La (meaning "Pass of the Butterflies" in Balti language, also known as the Saltoro Pass, is a mountain pass situated on Saltoro Ridge, sitting immediately west of the vast Siachen Glacier, some directly north of map point NJ 980420 which defined the end of the 1972 Line of Control between Pakistan and India as part of the Simla Agreement. Bilafond La (Pass of the Butterflies) is on the ancient Silk Route linking undivided India and China.