Set at a place near the Indo-Bangladesh border the film tells the story of a family whose relatives live on both sides of the barbed wire fencing.
"I was associated with Ritwik Ghatak during his later phase for quite some time and was introduced to his vision that created films on partition. Partition always brought forth the raw wounds inflicted on the psyche of the affected people," Ghosh told PTI here.
During a visit to the border, the "Moner Manush" helmer said, he realized how only humans are barred from crossing the man-made boundary but not others.
"Birds of the sky, fishes and dolphins of Ichhamati river, tigers and crocodiles of the Sunderbans. None can bar them from going from one side to the other. It is a history of the humans which we can never do away with."
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"Sankhachil," shot in both sides of the border, is Ghosh's third Indo-Bangla production.
Recalling the frenzied welcome the production team received in Bangladesh, Ghosh said he saw no difference between the people, the landscape, the localities and the food of the two separate nations.
"This shows the relevance and universality of our film
where partition comes as the backdrop in the lives of contemporary people who cross over to the other side for sake of living," he said.
Prosenjit recalled how during the one hour journey from the hotel to the location, he would have to come out of the car at seven-eight places to meet fans.
"We have also sent the film to Cannes and it will visit several other premier festivals," he said.