Building Blocks

Tetrapod, 25t OKB Grigorov 1/350, Ref. A35001 An interesting release from the prolific bulgarian artisan, this kit contains concrete tetrapods used  in coastal engineering to prevent erosion and strengthen coastal structures such as seawalls and breakwaters. Their shape dissipate the force of incoming waves by allowing water to flow around rather than against them.  There are 20 of them in this set, cast in