Mongalkote archaeological site - Credit: Wikimedia Commons
Mongalkote archaeological site is located in Purba Bardhaman district of West Bengal. Archeological excavations have revealed seven phases of cultural significance between 2000 BC to 1800 AD. After a detailed study of all the finds from this region, it has been possible to determine seven levels of human settlement. Period I represent the Chalcolithic era; Period II agricultural era; Period III is the Maurya-Sunga period; Period IV relates to the Kusana period; Period V is the Gupta era; And Periods VI and VI are the medieval period. Read more on Wikipedia
Source: en.wikipedia.org