So fierce and aggressive is the river Satluj on the way to Sangla and Chitkul, you literally can't hear the person standing next to you. Here are a couple of videos, from not so good a camera and a videographer. Still, you will get the feel of the violent and the ferocious river Satluj. It feels like bombs exploding in the river. Just looking continuously at it for a few seconds, it feels like drowning.
On the way to Sangla
Sangla to Chitkul
Add links to more videos in the comments section.