Grain silos (storage pits, more generally) were primarily used to store seasonally abundant foods, as I understand it. https://en.wikipedia.org/wiki/Prehistoric

Grain silos (storage pits, more generally) were primarily used to store seasonally abundant foods, as I understand it. https://en.wikipedia.org/wiki/Prehistoric_storage_pits https://en.wikipedia.org/wiki/Prehistoric_storage_pits