Pure Portugal is passionate about the work of permaculture designer Doug Crouch. He shares his knowledge and experience on swales. Swales in a Pattern Reflection In a pattern sense, swales deal with pulses of energy also seen as a wave, just as sound frequency moves in waves. Their shape is a ditch and a mound and one summer in Portugal we built a swale at the beach to demonstrate the technique and take advantage of the easily moved substrate for ...Read more