At that time structural abstract painting predominated Sion’s oeuvre; he made use of dispersal binders and moulded the surface of the picture into textured entities that bore certain hallmarks of nihilism. An example of this is the painting Jericho, whose structure and the aggressiveness of its approach evokes a powerful sense of futility and anxiety. In 1963 Sion abandoned abstraction and returned to more traditional artistic techniques. He sought in his works to create his own notional universe that derives from symbols from the past of European culture.