A Roman era boundary marker has been found near Neidenbach bei Kyllburg marked "FINIS PAGI CARV CVM" (the boundary or end of the Carucum pagus).
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The Caeroesi appear to have lived in the south of this range, in the Eifel region, in the area which later because the Roman pagus of Carucum, a sub-division of the Treveri.