In 2009, the 14th volume of Baltic-Pontic Studies (BPS) ran a series of papers summing up the state of research at that time into the routes between the Baltic and Black seas between the 4th and 1st mill. BC. They are an expression of an early reflection prompted by the need to look more closely at the impact Pontic cultural environments – where composite metallurgy was practised, designated as Early Bronze in this volume – had on the Decline Neolithic and Proto-Bronze settlement centres in the Baltic drainage basin. It is to this question that successive volumes of the BPS shall be devoted. Specifically, according to the research programme aims mentioned above (initial fruits being the papers included in BPS, vol. 18) the environments o...