ABC Online | Dam-surfing daredevils' viral video sparks warning from Tweed Shire Council ABC Online Thrillseekers sliding down a concrete spillway at a northern New South Wales dam are risking their lives in front of audiences of millions. Videos of young people on the giant "illegal waterslide" at the Tweed's Clarrie Hall Dam have been viewed up to ... Young daredevils use dam slipway as 'waterslide' |