therefore constituted an advance fortification. It will be studied over the course of the next excavations. At the same time, some aristocratic tombs have been discovered between the two lines of battlements. Public buildings Excavations conducted between 2012 and 2017 uncovered the remains of a large monumental public building dating to the La Tène period, c. 70 BC. In the first phase of construction (c. 70 BC) a terrace was built, surrounded by a murus gallicus stone wall with a large entrance on the east side. On the terrace a 44 metre-long square building was constructed out of wood, with galleries surrounding a central courtyard. Around 30 BC a monumental building was erected in the central space and the galleries were replaced with a palisade. In c. 15 BC the previous building was levelled and a vast platform was built which was surrounded by stone walls. In the centre the space was possibly occupied by a new central building. Next to this another platform was built, also surrounded by a stone wall, with an internal gallery built from wood. These constructions have been compared to other known public buildings and temples from the La Tène period, though the precise purpose of the buildings at Bibracte is yet to be determined. According to Hantrais et al. (2020) "The characteristics of this monumental construction indicate that it was certainly a public building with original architectural features and techniques. Yet, although this monumental building is very well documented archaeologically, its exact function remains enigmatic." Artisans' neighborhoods of Côme Chaudron and Champlain The excavations, which were resumed in 2000 in the neighborhoods known as the Côme Cauldron and the Champlain, near the Rebout Gate, revealed a neighborhood dedicated to metalwork and to artisans' lodging. This metalworking seems to have been very specialized, incorporating blacksmiths, bronzeworkers, and enamellers, whose workshops had already been restored by Bulliot, and probably also involved goldsmiths and minters. Excavations on the site of Beuvray, in the region of the Champlain, and on the surrounding massifs revealed the existence of mines for the extraction of metals, including gold, iron, and tin ore. This research will continue and will attempt to restore the workshops for the smelting of the metals extracted outside the oppidum. In fact, given the specialization of the workshops in Bibracte, it seems that the metals arrived in bars which were therefore cast outside the oppidum. Another artisanal neighborhood