OK guys let me resolve the confusion.
I just did the trek of these two lakes on 12 Sep:
Dharam Sar: Smaller one and is lower in altitude; 13,164 ft as per GE
Sambak Sar: Bigger one and is the higher one; 13,526 ft as per GE
When u reach Babusar Top through jeep there is a road going down in the valley just before Babusar Pass.
This is a jeep trek which leads to the base of these two lakes.
There is no jeep trek to the bigger Sambak Sar Lake from this road ...... However, since i was travelling with family so our jeep driver created his own route on grass land and took the jeep to the upper lake on his own created route. So, family didn't have to do the trek.
The males decided to do the trek which took 40 minute and the distance is around 1.2 km from the jeep trek to a higher spot near bigger lake Sambak Sar. From this point, u can also see Dharam Sar towards left (the smaller lake).
For pics, plz wait for my new thread 
