Eth. FORUM TIBERII
is placed by Ptolemy (2.9
) among the Helvetii.
It is unknown where it is. D'Anville guesses Kaiserstuhl
on the Rhine, chiefly because of the meaning of the German name; which is very unsatisfactory. Haller guesses Zurzach
on the Rhine, where there are Roman walls. Another guesses Steckborn
on the Lake of Constanz.