Another part of the Eburones also fled to a remote area of the Ardennes, where Ambiorix himself is said to have gone with some cavalry, and Caesar portrays the Scheldt river ("Scaldis") as flowing into the Meuse, apparently confusing the river with the Sambre. This has led scholars to argue that Caesar or later copyists sometimes confused river names or used them differently than later writers. Some scholars have argued for a location in the northern Eifel region, but this is difficult to reconcile with the fact that the Condrusi, who gave their name to the Condroz region, are described by Caesar as dwelling between the Treveri and Eburones. Wightman further notes that "no cultural groupings can be isolated to suit the Eburones in the north Eifel".