Roman Nijmegen is the largest archaeological site in the Netherlands. The urban and military agglomeration measures almost 500 hectares and comprises two areas with military fortresses, forts and temporary camps and surrounding semi-civilian occupation and cemeteries, two areas of an urban character, a late antique fort and five civilian cemeteries. These spatially and chronologically closely connected elements cover the entire Roman occupation in the Netherlands, from 19 BC onwards until the end of Roman rule in the mid-5th century AD. It is one of the most extensively excavated sites of its kind north of the Alps. Archaeological work has continued almost uninterrupted from 1946 until the present day, and over 50 hectares were excavated. Much of this work has only been published in a provisional way, by means of overviews. Less than 2 % is published according to the modern standards of a standard report. Of the more recent excavations, the largest one (over 7 hectares) is that by the former Dutch State Archaeological Service (ROB, now RACM) at the Kops Plateau from 1986-1995, that has so far only been published in overview. Although presumably built around 12-10 BC, a few years later than the nearby legionary camp at the Hunerberg (19-12 BC), this is one of the earliest Roman military sites in the Netherlands. Its interpretation as the headquarters of the prince Drusus, the first commander in chief of the conquest campaign in Germania magna, and at a later stage as a Batavian auxiliary camp, is tentative and needs to be further substantiated. Nevertheless, it is clear that this is one of the key sites for understanding the Roman presence in Nijmegen and in the Netherlands, and without any doubt also for understanding the Roman military expansion to the north until 16 AD. In addition, the fact that it has never been built over means that potentially the complete plan can be recovered. It was not completely excavated and about one third is protected and remains available for future investigations. This contributes to its significance at the national and international level.