Called the “pororoca,” this nearly endless wave is an example of a tidal bore. The strongest tidal bores occur on the biannual equinoxes in September and March when the sun, moon and earth ...

READ MORE: Severn bore 2024: The village beside the River Severn perfect for a spectacular glimpse of world famous tidal wave ...

Trees hang over, leaves drinking in the crisp cold river Severn.” The river is famous for its tidal bore - during high tides ...