Here's the third and final video of our Black rock lavenet fishery trip to the upper reaches of the Severn estuary.👍 The Purton hulks are certainly worth a visit . Here we see the concrete barges sunk after the second world war close to the Sharpness canal to prevent the estuary breaking into the canal........... It was the first time we have seen boats made from concrete , www.blackrocklavenets.co.uk | Black rock lave net heritage fishery