When you think of surfing, you usually think of surfers riding ocean waves breaking on the shore. However yesterday, the hot surf spot was the River Severn in the UK. The surfers lined up to catch the Severn Bore, a large wave caused by rising tides funneled into the river from the Severn estuary (which has the second largest tidal range in the world). According to the British surfing association, surfers have been riding the Bore since the 60′s trying to see who can take the longest ride. In 2006 a British surfer named Steve King set the world record for the longest surf ride when he rode the Severn Bore for 7.6 miles (besting the previous world record of 6.3 miles set on a river in Brazil). Surfers who came out yesterday were treated to a “once-in-a-decade” five star rated tidal event.

Severn surfers ride once-a-decade tidal wave [via Phantoms & Monsters]