The audio guide provided was often information and stories told by the victims, witnesses and even a guard.
Here is the killing tree. The Khmer Rouge never used bullets when there were other ways, too expensive. The infants heads were "smashed" against the trees often while the mothers watched. There was a mass grave a few feet away where over 100 women and babies are buried.
I overheard a tour guide saying the bracelets were a new thing, last three years or so, since the babies had no toys some visitor left a bracelet, I guess the most colorful or fun thing they had to offer.
The Killing Fields Memorial holding many of the exhumed bones.