Walls

This is when boulders are stacked loosely, but tighten up when they are firmly planted into the ground and locked together, this is a surprisingly time-consuming process of constructing a wall because we're dealing with boulders of all shapes and sizes.                                                                              

The boulders are puzzled together and when it's complete you'll have an old-world style boulder structure that can support just about anything it needs to hold!