Estela, our permaculture practiotioner, teach the workers, how they can make natural cement or COB, just with clay, sand and straw. They use as well dry coconut leaf, because we have a lot, from our waste management. and it works. We decided we want to build the mandalas for our crops in the Permi Area, using stone walls, join the stones with cob,to full fill the holes, so during the rain season, our garden beds are not damage for the water erosion, and we don´t lost the nutrients. Cob builidng is an old technic to join stones or do bricks.
date of workshop: 4-8-12