The fluorescence came, of course. By the 11th century Chaco to the north and Mimbres to the south were playing major roles. But these were very different centers. Chaco was a center for trade while Mimbres was a center for production. The Chacoan center controlled products from a range of production areas, many of them dependent on dry land farming. The Mimbres Valley was the center of agricultural production in the south and the two major adjacent drainages were filled with like-minded farmers. During the 11th century the Cañada Alamosa was home to marginal farmers and Mimbres affiliates who occasionally traded with dispersed small sites of northern groups affiliated with the Chaco system to the north. Thus the Cañada Alamosa region was a porous and interactive boundary between small villages of dry land farmers and occasional gatherers who lived on the edge of both systems.