Abstract
Settled on the banks of Arc, the « Domaine de La Grassie » has been the object of excavations in 2010. This operation highlighted four antique occupations, between the Ist and IIIrd century a. d. Their succession went along with important envitonmental transformations linked to the variations of the river.The subject of this paper is to present these different occupations, and more particularly the one of the IInd century. The latter is illustrated by a seriesof four modest buildings aligned on the same axis and interpretated as a sanctuary.