Baltoro Glacier:

Located in Baltistan in the Gilgit-Baltistan region of Pakistan, the Baltoro Glacier with a length of 38.5 miles is one of the longest glaciers outside the polar regions.  The glacier runs through part of the Karakoram, a large mountain range spanning the borders between India, Pakistan & China.  The glacier gives rise to the Shigar River, which is a tributary of the Indus River.