Why was Roman Concrete Forgotten during the Middle Ages?

Head to , and save 10% off your first purchase of a website or domain with the code TOLDINSTONE. For centuries, concrete was everywhere in Roman Italy: in the awesomely durable breakwaters of artificial harbors, in the soaring vaults of great baths, in the foundations of the Colosseum, and - of course - in the spectacular dome of the Pantheon. But during late antiquity, concrete all but vanished from the Mediterranean world, and would not be used widely again until the twentieth century. This video explains why. Please consider supporting this channel on Patreon: