The villages or hamlets are associated with groups of terraces, and consist of groups of single-family tribal dwellings which architecturally reproduce the people's spatial interpretation of their mountain environment. A steeply pitched thatched pyramidal roof covers a wooden one-room dwelling, raised above the ground on four posts and reached by a ladder which is pulled up at night. Clusters of dwellings form small hamlets of interrelated families, with a centrally located ritual rice-field as their focus. This is the first parcel to be planted or harvested; its owners makes all the agricultural decisions for the community, manages its primary ritual property, which includes a granary housing carved wooden gods, and the basket reliquary in which portions of consecrated sacrifices from all agricultural ceremonial rites are kept. A short distance from the cluster of dwellings is the ritual hill, usually marked by a grove of sacred betel trees round a hut or open shed where the holy men live and carry out traditional rites.