It's 50 years since the glorious Lake Pedder in Southwest Tasmania was dammed for the Hydro-Electric Scheme. It was a glacial, alpine lake, a place of deep and obvious ecological significance. Rima Truchanas learned to swim in Lake Pedder and watched on with her family as it drowned. Her early life was shaped by her parent's involvement in the campaign to save it. Now, there are plans to restore the Lake to its former glory. Frances Green has produced a documentary for RN's History Listen about this campaign — a movement that spearheaded the Greens political movement in Australia.