Related Rule
Democratic Republic of the Congo
Practice Relating to Rule 115. Disposal of the Dead
In 2008, a training manual by the Prosecutor at the Military High Court for magistrates on techniques for investigating sexual crimes, including war crimes, was adopted as part of the Programme on Investigating Sexual Crimes of the Democratic Republic of the Congo. The training manual states:
In addition, there are, unfortunately, cases of mass burial aimed at eliminating traces of crimes … This criminal form [of mass burial] is addressed here, insofar as it is used as a subterfuge to conceal mass violations of human rights committed during armed conflicts. …
§ 2. The concept of mass graves
There is no consensus about the characteristics nor the minimum number of individuals required for the constitution of a mass grave. … [Doctrine] distinguishes [different types of] mass graves according to whether they are constituted as:
a. a simple trench where bodies are grouped, with a minimum contact among them;
b. a more complex structure where corpses form a dense and contiguous aggregate, which is called a “mass of corps”. In this case, the individuals touch each other, and might be tangled, contorted or embroiled among them. There might even be dispersed remains which do not belong to this mass.
c. a multi-layered structure: there might be dressed and undressed bodies in various levels inside the grave. When exhumed, this mass is characterised by a chaotic and distressing image … Multiple masses of corps in the same grave indicate that the bodies were thrown there in different moments. The existence of layers of remains separated by an embankment of earth is another indication that … groups of individuals were deposited on successive occasions[.] 
Democratic Republic of the Congo, Training manual by the Prosecutor at the Military High Court for magistrates on techniques for investigating sexual crimes, adopted as part of the Programme on Investigating Sexual Crimes of the Democratic Republic of the Congo, Military Justice seminar, 2008, pp. 33–34.