The Olmecs were known to have built round huts with thatched roofs, sometimes raised on stilts to protect against flooding. The walls of these huts were often made of mud or wattle and daub, and the floors were made of packed earth.
On the island of Betio, the works had lasted more than a year. There was the Japanese headquarters of the Gilbert system and the only airfield in the archipelago, not to mention an incredible accumulation of defenses. The island was five kilometers long and at most 500 meters wide. Its entire shorel