When the River Towy was damned in the early 1970s it created Llyn Brianne Reservoir. Holding 64 million cubic metres of water and boasting Britain’s largest dam, the reservoir’s monumental spillway also once proved popular with daredevil, some would say, suicidal kayakers. Chronicle reporter Tim Butters takes a deep dive into the turbulent history of Llyn Brianne reservoir and the role it once played in the world of extreme sports!