This is Hang En, the world 3rd largest cave in the heart of Quang Binh province, Vietnam, that I visited with my other significant one Phuong Phan on our two-day trip. It used to be the 2nd largest cave in the world and the Vietnam’s largest cave before the discovery of Son Dong in 2009. The most interesting thing we discovered out of this cave was that the cutest school of fishes ever that seemed to be much more curious compare to the already high-curious travelers. I got many mini bites from those tini cave friends in the cave pool and discovered myself pretty fish-yummy [?].