I found out it from my favourite blog http://kzeelin.blogs.../blog-post.html.But it's written in burmese language. The beautiful small blue lake is located in Taw Kyal Village, Ywar Ngan Township. This lake is names as Mya ThaBait and situated on the way to Pindaya from Aung Ban.
It seems so interesting. why is it blue? Do you have any idea?