Situated on the corner of Via Roma and Corso Umberto I, in front of the Chiesa Matrice della Trasfigurazione, the underground oil mill, owned by Evangelista Di Seclì, is located 8 meters deep and is attached to the eighteenth-century Palazzo Colonna. The underground oil mill still retains some of the original structures and furnishings: a huge millstone, some mangers and beddings where the millers- men who left their families and living for 5-6 months period of oil production activities  inside the mill without getting out and getting the chance to see the sunlight-rested.