Chandraketugarh is an archaeological site located beside the Bidyadhari river, about 35 km north-east of Kolkata, India, in the district of North 24 parganas, near the township of Berachampa and the Haroa Road railhead.
Years of excavation have revealed relics of several historical periods, although the chronological classification of the relics remains incomplete.
Chandraketugarh. Sunga 2nd-1st century BCE
A site at Chandraketugarh]]
Khana-Mihir Mound - Berachampa 2012-02-24 2346
Finds include Northern Black Polished Ware (NBPW) relics, later wares dated from about 400 BC to 100 BC and approximately contemporary with the Maurya period, as well as from the more recent Kushanas and Gupta periods.
According to some historians, the Chandraketugarh site and surrounding area could be the place known to ancient Greek and Roman writers as 'Gangaridai'.
See also 
- Chandraketugarh : A Treasure House of Bengal Terracottas - Enamul Haque. Dhaka, The International Centre for Study of Bengal Art, 2001, 416 p., 678 illustrations including 400 in colour, figures, plates, maps, ISBN 984-8140-02-6. 
- Chandraketugarh : A Lost Civilization - Gourishankar De and Shubhradip De. Kolkata, Sagnik Books, 2004, 109 p., 34 photos,