We were at Sari by 4.30 pm. It was a 2.5 km trek so we were targeting to accomplish it in 2 hours. As we were going up it was difficult to breathe and we were getting exhausted too but as we had a crunch on time so we keep moving. While trekking we met two other people from Gurgaon also. We reached near the lake in next one and half hour and met one person who booked our camp with a local named as Negi.It cost us around 600 for four person and 100 rs per plate dinner. Entering the lake premises you have to give 75 Rs (for students) 150 Rs (for adults) as per the government charges. As I have my old college id with me so for us it was 75 Rs.By the time we reach there is was already dark and only a few parts of the lake had a little snow.