Looking like discarded pieces of some giants 3d puzzle, this pile of concrete cube clusters creates a strong structure that holds together better than a single formed poured concrete jetty. The idea is based on maximizing friction by having space end up between all the shapes and allowing for a variety of combinations of connectivity to come into play. Dry stone walls work and hold together for the same reason. For any one who is a waller this is a very gripping subject. It's very satisfying to see concrete starting to be used less mindlessly.
