In 1487, the Mexica dedicated the Great Temple of Tenochtitlan. The chronicles say eighty thousand four hundred people were sacrificed in four days, and the friar who wrote that number down did not believe it himself. We follow the number from the lost Mexica chronicle it came from, through the painted codices that disagree with it, to what five decades of excavation under Mexico City have found: the victims counted bone by bone, where they came from, an offering made in a year of drought, and the tower of skulls described by the conquistadors and found in 2015. What we know, what we think, and what people made up, kept apart. Chapters: 0:00 A number nobody believed 0:45 The temple under Mexico City 1:55 A city on a lake 4:00 What Cortés saw 5:03 The Great Temple 6:07 Ahuitzotl and the year 1487 6:58 Durán's account of the dedication 8:18 The hidden guests 9:17 Eighty thousand four hundred 10:10 The lost Chronicle X 11:25 One page, two numbers 12:37 Taking the number seriously 13:40 A boast of power 14:28 The fall of Tenochtitlan 16:11 The stone found in 1978 17:02 The myth of Coyolxauhqui 17:56 The Templo Mayor Project 19:00 What the bones say 20:59 Where the victims came from 22:04 Offering 48 and the great drought 23:43 The skull rack in the chronicles 25:04 The tower found in 2015 26:52 The women in the tower 29:02 Ancient DNA and what comes next 30:08 How many a year? 32:48 The protein theory 33:49 Two opposite myths 34:40 Putting the layers back in order Sources: - Diego Durán, History of the Indies of New Spain, ch. XLIV (manuscript about 1581; ed. 1867), Internet Archive — https://archive.org/details/historiadelasind01dur - Francisco López de Gómara, History of the Conquest of Mexico, ch. LXXXII, 1552, Internet Archive — https://archive.org/details/historia-de-la-conquista-de-mexico-francisco-lopez-de-gomara - Bernardino de Sahagún, Florentine Codex, 1577, Library of Congress — https://www.loc.gov/item/2021667837/ - Ximena Chávez Balderas, Bioarchaeology of human sacrifice, Arqueología Mexicana 143, 2017 — https://arqueologiamexicana.mx/mexico-antiguo/fueron-tantos-los-sacrificados - Eduardo Matos Moctezuma, review of Chávez Balderas, Human sacrifice at the Templo Mayor (INAH, 2017), Estudios de Cultura Náhuatl 54 — https://nahuatl.historicas.unam.mx/index.php/ecn/article/view/77851 - Xavier Noguez, Sacrifices at the Templo Mayor, Arqueología Mexicana 108, 2011 — https://arqueologiamexicana.mx/mexico-antiguo/sacrificios-en-el-templo-mayor - Raúl Barrera Rodríguez, The Huei Tzompantli of Tenochtitlan, Arqueología Mexicana special edition 79, 2018 — https://arqueologiamexicana.mx/mexico-antiguo/el-huei-tzompantli-de-tenochtitlan-0 - Caroline Dodds Pennock, Mass Murder or Religious Homicide?, Historical Social Research 37 (3), 2012 — https://eprints.whiterose.ac.uk/id/eprint/98071/ - Moreiras Reynaga et al., Residential patterns of Mexica human sacrifices, Journal of Anthropological Archaeology 62, 2021 — https://www.sciencedirect.com/science/article/abs/pii/S0278416521000295 - INAH, Offering of children to Tlaloc coincided with the great drought of 1454, bulletin 696, 2024 — https://www.inah.gob.mx/boletines/ofrenda-masiva-de-infantes-dedicada-a-tlaloc-fue-coincidente-con-la-gran-sequia-de-1454-en-la-cuenca-de-mexico - INAH, Women's skulls in the Huei Tzompantli, 25 February 2023 — https://inah.gob.mx/boletines/craneos-de-mujeres-en-el-huei-tzompantli-de-tenochtitlan-estarian-asociados-al-mito-de-origen-de-huitzilopochtli - INAH, Ten years after the Huei Tzompantli discovery, 2025 — https://www.inah.gob.mx/boletines/a-10-anos-del-hallazgo-del-huei-tzompantli-de-tenochtitlan-los-craneos-humanos-son-objeto-de-analisis-de-vanguardia - Clementina Battcock, The Crónica X: interpretations and proposals — https://portal.amelica.org/ameli/journal/81/81638001/ This episode is narrated with AI-generated voices. The research, sources and script are made by The Quiet Ruins.