Marl

"The Wagon Peoples grow no food, nor do they have
manufacturing as we know it. They are herders and, it is said, killers. They eat nothing that has touched the dirt. They live on the meat and milk of the bosk. They are among the proudest of the peoples of Gor, regarding the dwellers of the cities of Gor as vermin in holes, cowards who must fly behind walls, wretches who fear to live beneath the broad sky, who dare not dispute with them the open, windswept plains of their world." Nomads of Gor