It turned out that Vietnam is a sand exporter, especially river sand like this. I learned that from Uncle Google. One of the countries which had used lots of Vietnam's sand is Singapore. It's used to serve sea encroachment projects.
Mr. Tin didn't explain this to us, but no wonder he and Mr.Vu felt the need for us to stop by here. This is apparently something Vietnamese would like to boast of.
The view itself wasn't bad either. I took several shots with my Nokia N86 8MP.
This is another side of the view. Well, actually, the blue sky and cotton-like clouds formed all into perfection.