No ocean ? There 's already a line of people waiting to get in . No problem . Innovative boarders are surfing city rivers . Comment: China 's `` Silver Dragon '' is world 's largest tidal bore . Land-locked Switzerland is home of snowboarders-turned-surfers .
No ocean ? No problem . Innovative boarders are surfing city rivers . Comment: China 's `` Silver Dragon '' is world 's largest tidal bore . Land-locked Switzerland is home of snowboarders-turned-surfers .