Tomb I of Is Calitas is a pit tomb with unworked walls.
See:
- Maria Rosaria Manunza, Cuccuru cresia arta. Indagini archeologiche a Soleminis, Grafica del Parteolla, 2005
- http://www.fastionline.org/excavation/micro_view.php?fst_cd=AIAC_106&curcol=sea_cd-AIAC_112

