 While there was no shortage of land itself, there was a shortage of fertile land, and distances between settlements tended to increase.Fishing was supposed to be important in the area of Lake Rukwa (although the Germans make no mention of fish products found in Kimaurunga's Boma), Lake Tanganyika, and the surrounding rivers.The most important tasks for the men were hunting wild animals, building huts and granaries, collecting firewood, making and spreading compost piles, cutting grass, and threshing millet.