In Gloucestershire, England, “bore rider” Ben Rogers surfs the river Severn, one of the UK’s longest rivers, which runs several hundred kilometres from mid-Wales to the Bristol Channel.

The Severn Bore is an astonishing natural wonder that has been ridden by surfers since 1955. Watch a clip from the BBC One series, Coast to learn more. The Severn Bore is a unique phenomenon that ...

The best places to watch the bore are at Minsterworth, Stonebench and Over Bridge, before the river splits into two. But the early stages of the bore can also be seen at Epney, Newnham and Fretherne.

The Severn bore is bigger but the Dee surge scores better ... It meant that, as the estuary converges on its river, water is channelled into an unusually long straight. The regular geometry ...

The Severn bore is the largest tidal bore in the UK, but for river surfers, it highlights the devastating pollution in Britain's rivers ...

In order to see this content you need to have both Javascript enabled and Flash installed. Visit BBC Webwise for full instructions The Severn Bore is an astonishing natural wonder that has been ...