Small chiefdom communities living in the Guayas River basin of Ecuador, South America, in the Integration Period, c.ad 500 to the Spanish conquest. Milagro people built their houses on small mounds above seasonal flooding, while larger platforms up to 100 m long and 10 m high were used for the construction of temples and chiefs' residences. Mounds of intermediate size were used for burials, some of which were placed in tubes formed by knocking the bottoms out of a number of ceramic urns and stacking them one on top of another. Intensive agriculture was practised using water management systems. Milagro craftsmen were very skilled metalworkers and copper money axes were common.