My guest today is here to demystify one of the aspects of permaculture design that I hear the most questions about, but also one of the issues that I see folks most entrenched in their viewpoints about. I’m talking about earthworks; one of the first aspects that people implement and the most permanent change made in a landscape. Today I’ve got Douglas Barnes, author of “permaculture earthworks” and owner director of EcoEdge Design Ltd. to answer our questions and take the guess work out of the subject of terrain changes. In this interview Douglas talks about the best way to map out contours on the land, some of the most effective ways to harvest rainwater on a site, how to link up various earthwork and containment systems to make them work in tandem, and most importantly, he talks in detail about many of the safety concerns that many people have no idea about when it comes to installing swales and dams.