Containment gabion for the containment of inert material comprising a hollow body having an internal space suitable for containing inert material, wherein: - said hollow body is identified by a plurality of side walls having a metal mesh structure comprising a support base from which vertical walls project; - said support base identifies a ground support plane of said gabion comprising a network structure formed by a first order of first horizontal rods parallel to a first side of said containment gabion and by a second order of second horizontal rods orthogonal to said first horizontal rods; - each vertical wall comprises a mesh structure formed by vertical rods and by horizontal rods joined together to form the above-mentioned metal mesh structure; - each vertical wall is constrained to said support base at one of its lower ends and adjacent vertical walls at respective lateral ends, and wherein at least one vertical wall extending parallel to said first order of first horizontal rods comprises at least one vertical rod which, at the lower end of said vertical wall, comprises a first hook having: - a vertical portion substantially perpendicular to the ground support plane identified by said support base; - a first bending point extended, in continuation of said vertical portion, around a first horizontal rod of said support base, said first horizontal rod resulting to be the horizontal rod of said first order of first horizontal rods which is closest to said vertical portion; - a first portion extended in continuation of said first bending point parallel to and below said ground support plane identified by said support base until it surpasses a second horizontal rod of said first order of first horizontal rods of said support base, said second horizontal rod being more spaced from said vertical portion than said first horizontal rod; - a second portion extended between opposite end ends in continuation of said first portion with a direction of development inclined with respect to said ground support plane identified by said support base, so as to extend towards the inside of said containment gabion until a third horizontal rod of said first order of first horizontal rods of said support base, said third horizontal rod being more spaced from said vertical portion than said second horizontal rod; - a second bending point extended in continuation of said second portion to hook said third horizontal rod and - a third portion extended in continuation of said second bending point and having an incident direction of development with respect to said ground support plane identified by said support base, characterized in that: said second portion of said first hook comprises an intermediate portion more displaced towards the inside of said containment gabion with respect to an ideal straight line passing through said opposite ends of said second portion. - said hollow body is identified by a plurality of side walls having a metal mesh structure comprising a support base from which vertical walls project; - said support base identifies a ground support plane of said gabion comprising a network structure formed by a first order of first horizontal rods parallel to a first side of said containment gabion and by a second order of second horizontal rods orthogonal to said first horizontal rods; - each vertical wall comprises a mesh structure formed by vertical rods and by horizontal rods joined together to form the above-mentioned metal mesh structure; - each vertical wall is constrained to said support base at one of its lower ends and adjacent vertical walls at respective lateral ends, - a vertical portion substantially perpendicular to the ground support plane identified by said support base; - a first bending point extended, in continuation of said vertical portion, around a first horizontal rod of said support base, said first horizontal rod resulting to be the horizontal rod of said first order of first horizontal rods which is closest to said vertical portion; - a first portion extended in continuation of said first bending point parallel to and below said ground support plane identified by said support base until it surpasses a second horizontal rod of said first order of first horizontal rods of said support base, said second horizontal rod being more spaced from said vertical portion than said first horizontal rod; - a second portion extended between opposite end ends in continuation of said first portion with a direction of development inclined with respect to said ground support plane identified by said support base, so as to extend towards the inside of said containment gabion until a third horizontal rod of said first order of first horizontal rods of said support base, said third horizontal rod being more spaced from said vertical portion than said second horizontal rod; - a second bending point extended in continuation of said second portion to hook said third horizontal rod and - a third portion extended in continuation of said second bending point and having an incident direction of development with respect to said ground support plane identified by said support base, characterized in that: said second portion of said first hook comprises an intermediate portion more displaced towards the inside of said containment gabion with respect to an ideal straight line passing through said opposite ends of said second portion.