White Water Rafting ‘Great Ravine’ / Franklin River Tales, News / By Brett ‘Thunderush’ in the Great Ravine provides some great class IV whitewater rafting at medium to high levels. Preparing to run ‘Thunderush’ on the Franklin RiverLining up the raft.Thunderush in the Great Ravine. Heading for the lateral wave.Riding the lateral wave.And some more whitewater…Heading for the Land of the Giants – Franklin styleOne more drop … done!