Which mountain is taller, Istor-o-Nal or Siguang Ri?
Istor-o-Nal: Istor-o-Nal or इस्तोर-ओ-नल is the third highest mountain in the Hindu Kush, in the Chitral District of the North-West Frontier Province of Pakistan. Istor-o-Nal:  It is the 68th highest independent peak in the world. Siguang Ri:  At an elevation of 7308 m it is the 83rd highest peak on Earth.
i don't know