Dum Sum or Dan Sam (Dong Sum) Valley is one of the beautiful valley in the Karakoram Range. The valley is situated on the way when you are going towards Saltoro or Kondus Valleys from Khaplu.
Actually it is Dong Sum it means three big or high mountain in Balti language because this village located in the centre of three high granite walls.
"Life is brought down to the basics: if you are warm, regular, healthy, not thirsty or hungry, then you are not on a mountain... Climbing at altitude is like hitting your head against a brick wall — it's great when you stop."