Helladic period
There are four types of graves that are found at sites from the Middle Helladic period; pit graves, tholos graves, cist graves, and shaft graves. A pit grave is self explanatory, as it is simply a pit in the ground, while tholos styled graves are characterized as being more of a chamber like tomb. Cist graves and shaft graves are interesting because they are two styles of burial that originate from the Middle Helladic period itself, and it is believed that migrants who moved to Greece during this period influenced the creation of these new burial styles. Cist graves are deep and rectangular with a tumulus, or mound of earth, placed over top and came about during the beginning of the Middle Helladic period. Shaft graves are larger and deeper than cist graves (measuring on average 6 meters long, 4 meters wide, and 4 meters deep) and came about during the end of the Middle Helladic period. Additionally, infants are buried in special jars, "pithoi", that generally measure around 30 inches (~75 cm) tall. Based on the archaeological evidence, at Middle Helladic burial ceremonies bodies are placed in graves on their sides with their knees bent (women are placed on their left sides, and men on their right), then those present at the ceremony drink from cups that they then leave at the tomb. Burial customs also included leaving valued items with the bodies like pottery, silver, or bronze.