Frontier zones are the most complex and interesting of regions. They have been explored as wild badlands of smuggling and insurgency in the international system in many recent books from Niall Ferguson, George Friedman, Robert Kaplan, and David Kilcullen. In this vein, Scott MacEachern takes a microscopic view of one relatively small frontier area around the Mandara Mountains on the Cameroon-Nigeria border and describe its inhabitants’ cultural evolution over seven millennia.