These stories have obvious difficulties if taken as fact. Historians, including eyewitnesses like Caesar, have given us accounts that places the Sicambri firmly at the delta of the Rhine and archaeologists have confirmed ongoing settlement of peoples. Furthermore, the myth does not come from the Sicambri themselves, but from later Franks (of the Carolingian age or later), and includes an incorrect geography. For these reasons, and since the Sicambri were known to have been Germanic, current scholars think that this myth was not prevalent, certainly not historical: For example, J. M. Wallace-Hadrill states that "this legend is quite without historical substance". Ian Wood says that "these tales are obviously no more than legend" and "nonsensical", "in fact there is no reason to believe that the Franks were involved in any long-distance migration".