At the back of our garden is a high rocky area. It makes a great back wall – beautiful, fun to climb, and a sanctuary for lots of birds, geckos and plants. When it rains, the water rushes off these rocks and erodes a lot of soil from the gently sloping field at the foot.
One technique that is used to prevent erosion is digging swales and building berms – that is, digging a ditch and piling the mud next to it on the downhill side. Continue reading