Also around the same time, circa 115 BC, it is known that architectural decorations such as decorative reliefs started to be introduced at nearby Sanchi, 6 km away from Vidisha, by craftsmen from the area of Gandhara, a central Indo-Greek region. Typically, the earliest medallions at Sanchi Stupa No.2 are dated to 115 BC, while the more extensive pillar carvings are dated to 80 BC. These early decorative reliefs were apparently the work of craftsmen from the northwest (around the area of Gandhara), since they left mason's marks in Kharoshthi, as opposed to the local Brahmi script. This seems to imply that these foreign workers were responsible for some of the earliest motifs and figures that can be found on the railings of the stupa.