The big issue at Sister’s shamba is the construction of the fish farm. The water is there during the rainy season. All that is necessary to produce fish is building three terraced retention ponds at the back of the property which slopes gradually and then abruptly into a ravine which is dry during most of the year. The technology is already there. The first step is the removal of the eucalyptus trees on the slope. The second step is the digging out of the terraces and the construction of the walls that will retain the water in the ponds. This can be done with the mud from the slope and the wood from the eucalyptus trees. In one of the houses we visited, the husband had just closed up a doorway, exposing the construction of the wall, which was made of woven branches which provided the latticework that supported the mud. He was letting the mud dry before he applied the final coat.