So pretty! comes with instructions!! (find here and here) (more here) Edit Addendum: I would only accept the bottom middle 2 that look like a picket fence. 1. Wild life can still pass though and migrate. 2. Wind and water will pass though, not causing environmental issues, also sections of existing wall collapsed because it acted like a dam. 3. BP agents can spot activity to breach the wall, or other trouble. Some parts of the existing wall needs to be replaced (top drugs more than people), but I highly doubt a wall entire length will stop movement.