Now go to Kheerganga trek ( 12Km and 7 hours long). When we went we got lost in the woods. Then came back to Kalga and again asked for the right trails. That was a terrifying experience. Always take the towel and clothes because at Kheerganga there is a hot water bath kund ( separate for male and female). You can go to Mantalai lake trek further if you are a trek lover.
YOU CAN ALSO GO VAI BOON-BOONI GLACIER.
Kalga->Boonboni is 9Km (6-7 hours)
Booboni->Kheerganga is 5km (3.5 hours)