A Chalcolithic archaeological culture of lower Sindh and Balochistan (dual type-sites Amri and Sohr Damb near Nal) that preceded and fed into the Kot Diji / Early Harappan cultural horizon.
Locally evolved into the Kot Diji culture and ultimately the Mature Harappan phase of the Indus Valley Civilisation.
Covers the pre-Harappan Amri and Nal regional cultures of Sindh/Balochistan.