हिन्दुस्तान का करिश्मा, पहली बार नदी के नीचे शुरू हुई ट्रेन। Under Water Train।

HOT NEWS UPDATE: India’s first underwater train started in Kolkata which will go through a tunnel built inside Hooghly river। It will connect Kolkata to Howrah। Experts from Russia and Thailand also gave their inputs to built this underwater tunnel successfully inside the Hooghly river।