It is called as frozen river trek which is trekked under guidance. It’s minimum 6 days trek. The whole path is snow covered and weather seems to be harsh, though it is not a tough trek. Weather drops terribly, while there is a list of do’s and dont’s before starting the trek. This trek starts from Leh.
Yess chaddar trek but if you have done trekking before and if you are fit enough to control the cold temperatures then it's best place and you should be so careful bcoz it is the most difficult trek in India after mount Everest