Gabbione
Gabions original form an Italian word (gabbione) meaning (big cage), which where round cages with open tops and bottoms which was used to fill earth for he use as military fortifications, modern definitions include any caged arrangement for erosion control, the most common civil engineering use is to stabilize shore against erosion, other users include retaining walls, temporary floodwalls, to filter slit from runoff etc.
They may be used to direct the force of a flow of floodwater around a vulnerable structure; gabion baskets have advantages due to their modularity and ability to be stacked in various shapes.
They also have advantages over more rigid structures because they can confirm ground movement, dissipate energy from flowing water and drain freely, their strength and effectiveness may increase with time in some cases, they are also used to keep stones that may fall from a cutting or cliff and which can endanger on a through-fare.
