In 1985, during systematic archaeological field walking close to the Titelberg oppidum, Gaston Polfer discovered fragments of Italic amphorae at a site called Fulleswis, near Clemency.

Archaeological excavation began in late September 1987 and brought to light one of the largest funerary chambers of the Late Iron Age known to this day. The burial pit, which contained an oak-lined chamber evidenced by wood fibres found during the excavation, measured 4.30 m by 4.20 m. This huge chamber had been plundered during Gallic times and later on disrupted by the construction of a modern drain, so unfortunately it was no longer intact at the time of its discovery.

Lined by double layered wood panels, the chamber contained the charred remains of a cremated adult male individual whose body had been wrapped in a bear skin prior to incineration. After cremation, the charred bones had been carefully collected and washed before being put on the wooden floor of the chamber, probably in a container made of organic material. The chimney of a bloomery had been placed on the roof to symbolize the close relationship of the deceased with the regional iron industry.

Besides from the elaborate construction of the chamber and despite the looting of the most precious offerings, the remaining grave goods attest to the social importance and the wealth of the deceased: wine amphorae, remains of piglets, Gallic pottery, an Italic bronze basin and various objects including a very beautiful iron grill.