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Tagged “corbel-vault”

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  The Arch of Labná

  How did Puuc Maya masons throw a six-metre-high span of thin veneer stone over open air without ever cutting a keystone — and what was a monumental gateway doing in the middle of a city of only about three thousand people?

  c. 800-1000 CE (Terminal Classic); the arch is usually placed in the later 9th century, and Labná's only readable dated inscription reads 862 CE · Labná, Yucatán, MexicoAdded July 2026
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  Bent Pyramid of Sneferu

  Why does this pyramid change its angle partway up — steep near the base, then suddenly shallower — and what does that visible 'correction,' frozen in stone, tell us about how the Egyptians learned to build a true pyramid?

  c. 2600 BCE (Fourth Dynasty, reign of Sneferu) · Dahshur, Giza Governorate, EgyptAdded July 2026
• HIGH WONDER

  Su Nuraxi di Barumini

  A Bronze Age people who left no writing covered Sardinia with some 7,000 dry-stone towers, then grew this one from a single keep into a walled bastion and town — so what were the nuraghi actually for, and who exactly built them?

  c. 1600–1200 BCE, Bronze Age (later expanded) · Barumini, Sardinia, ItalyAdded July 2026
• HIGH WONDER

  The Temple of the Inscriptions, Palenque

  How do you build a pyramid around a tomb that has to be sealed forever — placing a multi-tonne carved lid inside a vaulted crypt before there is any pyramid to carry it — and then run a stone tube from the coffin to the temple floor above?

  begun in the last decade of Pakal's life and completed shortly after 683 CE by his son Kʼinich Kan Bahlam II · Palenque, Chiapas, MexicoAdded August 2026
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  Tikal Temple I

  How do you bury a king with a 3.9-kilogram jade necklace and a bundle of inscribed bones at the bottom of a hole, then raise fifty-five metres of limestone on top of him — and cut the doorway lintels from a wood that is still holding thirteen centuries later?

  c. 732 CE (Late Classic), raised after the death of Jasaw Chan Kʼawiil I in 734 and completed under his son · Tikal, Petén Department, GuatemalaAdded August 2026
• HIGH WONDER

  Tikal Temple V

  Why raise 57 metres of solid limestone — the second-tallest thing at Tikal — to carry a summit room less than a metre deep, sealed behind a rear wall nearly five metres thick?

  c. 650-700 CE (Late Classic); radiocarbon centres on c. 700 CE, while associated ceramics point to the reign of Nuun Ujol Chaak in the second half of the 7th century · Tikal, Petén Department, GuatemalaAdded August 2026
• HIGH WONDER

  The Treasury of Atreus

  Corbelled roofs everywhere else in the ancient world stall out around five metres, because a false dome has no keystone to fight the span — so how did Bronze Age masons at Mycenae close one 14.5 metres across, and set a single 120-tonne lintel above its door, without iron, pulleys or a crane?

  c. 1400–1250 BCE, Late Bronze Age (Late Helladic III) · Mycenae, Argolis, GreeceAdded July 2026