The Quechua people in the Andes, Peru, have a holistic worldview that integrates the natural and the supernatural realms. They believe that landslides and avalanches are caused by the anger of the mountain gods, who need to be appeased with offerings and rituals. They also have a complex system of terraces, canals, and drainage that reduces the risk of soil erosion and water accumulation. They also plant diverse crops and trees that enhance the soil fertility and stability.