India To Bhutan Train: The spokesperson said the proposed 69.04 km railway line will connect Kokrajhar station in Assam to Gelephu in Bhutan at an estimated cost of Rs 3,500 crore. India To Bhutan Train: The spokesperson said the proposed 69.04 km railway line will connect Kokrajhar station in Assam to Gelephu in Bhutan at an estimated cost of Rs 3,500 crore. Business