Early Bronze Age culture centered on Bohemia, Bavaria, Germany, Poland, and Moravia, named after a type site cemetery north of Prague, Czechoslovakia. Characteristic metal objects include ingot torcs, lock rings, various pins, flanged axes, riveted daggers, and the halberd. Regional groups include: Nitra, Adlerberg, Straubing , Marschwitz, and Unterwölbling (Austria). In late Unetice times, there is evidence of commercial contact with the Wessex culture of Britain and, via the amber route, perhaps with southeast Europe and the Mycenaeans. The Veterov culture of Moravia and the Mad'arovce culture of Slovakia, which had links with the Mycenaean world, are sometimes considered to be subgroups within the final Unetice tradition. Innovations of the culture include two-piece mold and use of tin to make bronze. The earliest Bronze Age center, Unetician A, consisted of a complex of flat inhumation graves with modest grave goods in copper and bronze. Unetice is an umbrella term for the local groups and is dated to c 1800-1500 BC.