https://www.usluck.com/499507/waru-waru-is-an-agricultural-technique-developed-in-300-bce-in-bolivia-located-on-floodplains-they-consist-of-mounding-up-soil-to-create-planting-beds-the-water-in-the-canals-absorbs-the-suns-heat/ Waru Waru is an agricultural technique developed in 300 BCE in Bolivia. Located on floodplains, they consist of mounding up soil to create planting beds. The water in the canals absorbs the sun’s heat during the day and radiates it back at night, helping to protect crops from frost [3735×2415] #Artefact #ArtefactPorn #Artefacts #Artifact #ArtifactPorn #Artifacts