at the strid along the river wharfe in the yorkshire dales, the water is foaming and swirling with lots of bubbles

strid rapids white water limestone rock moss vegetation cascade cascading river wharfe waterfall north yorkshire dales fast flowing wharfedale current mossy torrent valley dangerous wood circular walk tourism destination scenery sightseeing travel environment undercurrent nature creek outdoor natural landscape watercourse geology bubbles frothy notorious rocky channel beauty formation light tourist attraction view downstream condenced narrow encased terrain england