Black Death Mortuary Practices: Mass Graves, Plague Pits, and Cremation

The 1347–1351 Black Death (Yersinia pestis) killed 30–60% of Europe's population. Mortuary systems collapsed.

Three Primary Disposal Methods

1. Mass Graves (Plague Pits):
   • Trenches dug outside city walls (miasma theory).
   • Layers of bodies with quicklime (calcium oxide) between.
   • London: East Smithfield, Charterhouse Square; thousands per pit. Archaeology confirms stacked, orderly burial initially; later chaotic.
2. Lime Pits (Specific Plague Pits):
   • Deep shafts filled with alternating lime and bodies.
   • Lime (CaO + H₂O → Ca(OH)₂ + heat) accelerates decomposition, reduces odor, disinfects.
   • Used where soil too shallow for trenches.
3. Burning (Cremation):
   • Less common (wood scarcity, religious opposition to burning).
   • Used in later waves, or when pits overflowed (e.g., Marseille 1720).
   • Bone fragments found in some archaeological contexts.

Societal Impact

• Breakdown of individual rites; clergy overwhelmed.
• Ordinances: fixed prices for burial, mandatory lime, depth requirements.
• Mass graves later exhumed for charnel houses or development; some preserved as memorials.

These practices reflect desperation, evolving disease theory, and the sheer scale of mortality.