the two folders contain the three-dimensional models of each lithic artifact of Stucture I (SI), a lithic concentration found in the gravettian archaeological site of Piovesello, Cassimoreno, Piacenz
[MM 1965:033](http://kulturarvsdata.se/SMVK-MM/GreekRoman/html/3100975) Inverted rim; on floor centre a semi-spherical protuberance (omphalos); relief decoration on floor, encircling the omphalos; low
