The rawa mugi, or 'red spirits', are the spirits of Maring men killed in warfare, who dwell in the upper montane forest of the high ground. They form one pole of a thoroughgoing cosmological dualism: associated with the color red, with fire and heat, with dryness and hardness, with the ax and with the strength and solidarity of fighting men. In the ritual cycle Rappaport made famous, the red spirits are the chief creditors of the living. Their support is enlisted in warfare, and at a truce a cordyline, the rumbim, is planted with a pig sacrifice to acknowledge a debt owed them. That debt is discharged only when the group has raised pigs enough to stage the kaiko, uproot the rumbim, and slaughter the herd in the ancestors' honor, freeing the men to fight again. The red spirits favor the high forest and its creatures and receive the fat and the smoke of sacrificed pigs.