River wave in India which can be surfed for over 40 kms. The locals call it the Baan and JetSurf's own Everaldo 'Pato' Teixeira was among the first in the world to surf this natural phenomenon.

The tidal river bore surges up the Hooghly River, a tributary of the Ganges on the daily high tide, destroying fishing boats, small structures and sweeping unfortunate livestock before it Large ships huddle together in the channel for safety and ferries are cancelled due 
to the destructive power of the wave.