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The Department of Archaeology and Ancient History, M. S. University of Baroda, conducted excavation at the habitation sites situated on the sandstone outcrop known variously as Hamasari, Harpasari or Amasari-no-Tekro, in the vicinity of Zekhada in Santalpur Taluk, with a view to investigating their cultural content. The excavation revealed a 1.5-m thick deposit belonging to the chalcolithic culture, when the people lived in circular huts, occasionally provided with porch, built of wattle-and-daub. The floorings of the huts were made of rammed earth sometimes mixed with lacromina croix. The ceramic industry of the culture represents such forms as dish-on-stand, goblet, bowl, jar, etc., which show similarities with those from Harappan and post-Harappan sites like Rangpur, Surkotada, Ahar, etc. Other important finds from the excavation include: cores and blades of stone; beads of carnelian, jasper, lapis lazuli and faience; bangles, awl, wires of copper; and terracotta triangular and rectangular tablets and balls. These sites seem to represent rural settlements of the chalcolithic culture.