Abstract
Stele 3 of Bretellière, which measured around 4m, underwent three movements during the 20th and 21st centuries and remains marked by several alterations (breaks, scrapes). The discovery of engraved signs in 2012 allowed a first survey of the composition, similar to the iconographic programs known in Morbihan. The stele was part of a stone row with at least eight monoliths, two of which are still standing and one lying. The resumption of photogrammetric data acquired in 2012 allows to produce a new 3D model of the slab and to build a body of virtual shrinking images better able to inventory the anomalies in the hollows (engravings, disturbances). The graphical synthesis confirms the presence of a cetacean representation and a crook sign, and adds the existence of a snake and a fourth pattern unfortunately erased too far to conclude.
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