Yet another unique attribute of Hạ Long Bay may be the abundance of lakes In the limestone islands. Such as, Dau Be island has six enclosed lakes. Each one of these island lakes occupy drowned dolines in fengcong karst. Locale[edit] "Ngồi trực thăng ngắm vịnh Hạ Long từ trên cao https://tourthuphicngmvnhhlong37802.liberty-blog.com/6682339/facts-about-tour-thuỷ-phi-cơ-ngắm-vịnh-hạ-long-revealed