The fanum is a circular chamber
(cella) surrounded by a sixteen-sided polygonal
ambulatory or gallery, which opens onto the
Cère and
Jordanne River valleys. The angles of the polygon are marked by the bases of fluted columns (eight of which are found in-place) bearing
acanthus-leafed Corinthian capitals.
Terracotta antefixes found at the site give some indication of the roofing materials and design. The complex appears to have had a courtyard encircled by a perimeter wall that was discovered through
sondage, towards the northwest. The wall is from the fanum, with a northwest-northeast orientation erected over a length of . There are also vestiges of a partially exposed square enclosure with paved ground southeast of the fanum, whose sides are long. The structure is speculated to perhaps have been an annex of the sanctuary, a shelter for receiving pilgrims, or even another fanum. ''Fanum d'Aron
appears uncommon in Arverni and Vellavi territory for having a polygonal rather than quadrangular ambulatory, and unique for the ambulatory being of sixteen sides. Another fanum found at Mauriac (Cantal) can be compared for appearing to have had a round cella
and decagonal ambulatory. This uncommon round cella'' with polygonal ambulatory plan seems to be more typical of Western Gaul than elsewhere, as it is also found in examples at
Saint-Gervais (Vendée) and
Chassenon (Charente). == Related sites ==