A step pyramid exists in the archaeological site of Monte d'Accoddi, in Sardinia, dating to the 4th millennium BC: "a trapezoidal platform on an artificial mound, reached by a sloped causeway. At one time a rectangular structure sat atop the platform ... the platform dates from the Copper Age (c. 2700–2000 BC), with some minor subsequent activity in the Early Bronze Age (c. 2000–1600 BC). Near the mound are several standing stones, and a large limestone slab, now at the foot of the mound, may have served as an altar."
