The Roman B. was preceded by a Celtic settlement of Helvetii and Rauraci. First, a large, open settlement existed in the late 2nd cent. in the Rhine plain (Basel-Gasfabrik), to which also belonged a field of cremation graves. During the early 1st cent., the Münsterhügel housed an oppidum fortified with murus gallicus, which perhaps was vacated when the Helvetii left the area in 58 BC.
Pingel, Volker (Bochum) and
Walser, Gerold (Basle),
Brill’s New Pauly, Antiquity volumes edited by: Hubert Cancik and , Helmuth Schneider, English Edition by: Christine F. Salazar, Classical Tradition volumes edited by: Manfred Landfester, English Edition by: Francis G. Gentry.
Consulted online on 21 August 2019 <http://dx.doi.org/10.1163/1574-9347_bnp_e213230>