A mass grave is a grave containing multiple number of human corpses, which may or may not be identified prior to burial. The United Nations defines a mass grave as a burial site which contains three or more victims of execution. == History == Mass graves are an infamous variation on common burial, still occasionally practiced today under normal circumstances. Mass or communal burial was a common practice before the development of a dependable crematory chamber by an Italian named Brunetti in 1873. In Paris, the practice of mass burial, and in particular, the condition of the infamous Cimetière...