I must say, a wonderful experience... Lush (really lush) green surroundings, huge Snow laden Mountain Ranges as the backdrop, Night Camping, Jungle Trek, Crystal clear Skies in the night for Star Gazing... what more do you want? Oh yes, the Beautiful Lake itself ;)
A must visit place, highly recommended...!!
Don't miss it while it's still not very famous...
Here is the official link but with very little details. Let me know if you need more details about the place...
http://gov.ua.nic.in/uttaranchaltourism/Devaria tal.htm
Also, my pictures below are much better than what you'll probably find on the Internet ;)
Finally, here are the (great, LoL) pictures...
The Beautiful Lake: Devaria Tal

The Lushy/Mushy Greens all around our Camp...

The Mesmerizing Sunset (and Sun rays)...

The towering Chaukhamba (4 Peaks) mountain...
About 7000+ mts, almost as big as mountains get, and as close
as you can get to one of the big ones... Icing on the Lake ;)

Happy Trekking,
Saurabh