Today LORD VISHWAKARMA puja is over and devotees emerge the idols into the nearest river which is called 'BHASAN' in bengali.
Idols are coming in different sizes sometimes in devotees hand or sometime on devotees head.
But before emerging the idols into the water devotees are make 7 circular rounds with their god idol for better luck and good karma.
After all this happened devotees emerge the god idol into the river with great respect.