Nag Dal known as a Cobra Lake was explored by the King of Alwar(Rajasthan). When he visited the lake as per the advise of Priest to bring water from Holy Lake to have rains in his kingdom. The King did so and during this course had a scuffle with Cobra King resulting which the water spilled near Bhagsu. The King prayed to the Nag Devta to bless his Kingdom with rain as it suffered with acute drought conditions. The Nag Devta became benevolent to the King and blessed him with rain. This lake is now visited by hundreds of people for a holy dip and people worship Nag Devta on the occasion of Janmashtmi.
|May to November|
Day 1 9km Mcleodganj to Triund
Day 2 5km Triund to Lahesh Cave (3300 m)
Day 3 15km Lahesh Cave to Nag Dal cross over IndrharPass(4350m) and back to Lahesh Cave
Day 4 9km Lahesh Cave to Mcleodganj