Take a train or car from Kolkata to Namkhana or Kakdwip
From Namkhana or Kakdwip, take a ferry to Kachuberia
From Kachuberia, take a bus, auto, or taxi to Gangasagar
Alternatively, take a direct private car or hired taxi from Kolkata to Lot 8 or Harwood Point and continue by ferry
Use the Kolkata to Gangasagar route via Diamond Harbour, Kakdwip, and ferry crossings
Travel by road and ferry together, as there is no direct bridge to Gangasagar