How far is that from the Tutoberger forest where Arminus whupped hinny on the Romans?
“VARIUS! GIVE ME BACK MY LEGIONS!”
About 250km (170 miles) between Bonn and Bielefeld/Osnabruck, which seems to be the most likely location.
But this site would date from long after, during a period when the Rhine border region was largely pacified and settled.
Somewhere east of there — the Romans retook the territory, whipped Arminius and his “troops”, and a few years later A was murdered by some kinsmen — sounds like hired-gun retribution, else how would word have reached Rome? The Romans expanded eastward into what’s now Germany, and built the Limes or wall linking the upper reaches of the Rhine and Danube in order to provide an artificial barrier to complete the natural one.