Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. The surf park, which cost $22.8 million, opened on August 1 and is the world's first commercial artificial surfing lake, according to the company.The pool is 300 metres (980 ft) long and 110 metres (360 ft) wide, containing a total of six million gallons of water. A bi-directional snowplough-shaped wave-generation mechanism, towed on a cable between the two central towers, moves up and down the pool on a three-rail track, generating the waves. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Novice surfers are taught how to surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)





Surfers surf at Surf Snowdonia in Conwy, North Wales, September 3, 2015. (Photo by Andrew Yates/Reuters)