Research Group B-I-2 has set as its goal the investigation of indistinct and definite boundaries considered as two complimentary methods of delimiting space. One of the projects analyses diverse methods and layout schemes for concrete delimitation, i.e. the fixed delimitation of political spaces (city walls, fortresses). Against this background, two additional projects are occupied with the opposite phenomenon of “fuzzy borders”, i.e. inexact territorial demarcation. One related sub-project focuses on diverse forms of Roman presence outside the Roman Empire (e.g. Roman outposts in the northern Black Sea region); another project researches ethnic conflicts in the empire’s border zones (agreements, contracts and oaths between the Roman Empire and bordering nations).