Tagged “corbel-vault”
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
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 WONDERSu 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 WONDERThe 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