 It does, indeed, revolve around the many strategies Meyers has noticed for defecating where there is no modern toilet and running water.As one reads the book, it quickly becomes obvious that Meyer's concern is not only for the comfort of the camper or hiker, but for the impact that human waste leaves on pristine natural ecosystems.She talks about digging "environmentally sound" holes, locating the high water line, so as not to inadvertently pollute a stream or ground water source, and what types of soil facilitate quickest decomposition without risk of environmental contamination.