edge and folded one relative to another the side walls are pivotally connected thereto the single box gabion structure being adapted to be erected on site by pulling it apart so that when it is moved from the flattened form to the erected condition the side walls unfold and having a cavity to be filled with a fill material deployment of the single box gabion of the invention is generally effected by transporting the folded gabion to a deployment site unfolding the gabion and filling each single box compartment of the gabion with a fill material generally the fill material will be dictated at least partly by the availability of suitable materials at the deployment site suitable fill materials include but are not limited to sand earth soil stones rocks rubble concrete debris snow ice and combinations of two or more thereof according to the present invention there is also provided a modular gabion structure comprising a plurality of the single box gabions described above in one embodiment one or more single box gabions in the modular gabion structure are coupled or interconnected to another single box gabion in another embodiments all the single box gabions in the modular structure are interconnected to each other the modular structure comprised of interconnected single box gabions can each vary in width and or height to accommodate different configurations and purposes the adaptability of interconnecting single box gabions has an advantage of protecting structures with corners or irregular shaped and rough terrains which cannot be achieved by conventional gabions deployment of the modular gabion structure is generally effected by transporting folded single box gabions to a deployment site unfolding the.