In this week's episode of Waterways Dick takes a break from Rambler and its crew and heads off in his canoe to enjoy a spot of fishing. He catches some perch and roach and carefully returns his prey to the canal. Back on Rambler he takes the wheel and guides the hull through green countryside on a ribbon of brown water like a spaceship on a long interplanetary mission. At Mosstown Harbour Dick disembarks to visit the Corlea Trackway Visitor Centre. He visits the preserved eighteen metre tocher, a section of the massive wooden roadway built across the bog in the year 148 BC. Noel Carberry shows Dick the fascinating bog vegetation surrounding the centre including some carnivorous pitcher plants whose prey-trapping mechanism features a deep cavity filled with liquid known as a pitfall trap.