About 20 kms south-east of Rangdum stands the Panzila axis, across which lies Zanskar, the most isolated of all the trans-Himalayan valleys. The Penzila pass (4,401m) is a picturesque tableland surrounded by snow-covered peaks.
About 20 kms south-east of Rangdum stands As the Zanskar road winds down the steep slopes of Penzi-la to the head of the Stod valley, the majestic ” Drang-Drung” glacier looms into full view. A long and winding river of ice and snow, “Drang-Drung” is perhaps the largest glacier in Ladakh, outside the Siachen formation. It is from the cliff-like snout of this extensive glacier that the Stod or Doda tributary of the Zanskar River rises.