Mystery sounds like a sonic boom of a jet or an airplane have been heard in the Ganga and Brahmaputra delta. The strange thing about these sounds are that they have been heard from the times when airplanes were not even invented and thus are confusing for the experts too.
Mystery sounds like a sonic boom of a jet or an airplane have been heard in the Ganga and Brahmaputra delta. The strange thing about these sounds are that they have been heard from the times when airplanes were not even invented and thus are confusing for the experts too – See more at: https://insightsindia.blogspot.in/2013/02/top-mysterious-places-in-India.html#sthash.gxcOFtIp.dpuf