The Hallet slab is integrated in the outside wall of the Sainte-Catherine church. A crucified Christ and a cock are represented on it. This work, made by Jean Quirin Piette, shows an art more free, that is indissociable from the material in which it is made. In that way, it looks like the other works of the quarry masters from Ottré (Vielsalm)It is registrated in the Civilian public heritage of Wallonia