The Giant’s Hedge stretches for nearly ten miles between Looe and Lerryn in south east Cornwall, forming a long boundary across the landscape. In some places it still rises to around twelve feet, and Victorian records suggest that parts of it may once have stood as high as sixteen feet. Where best preserved, the Hedge includes a large earth bank, stone facing, and an accompanying ditch. Its scale has led many to see it as a defensive and territorial boundary, possibly marking the edge of an early Cornish kingdom. The earthwork runs between the waters of the River Fowey and the West Looe River, enclosing the land between them. This position suggests that it may have controlled or protected movement through a significant stretch of territory. The monument is not a single perfectly preserved line. Instead, it survives in sections across several parishes, with some parts visible as a high bank and ditch, and others reduced to scarps, lanes, field boundaries, or traces in the ground. Around three kilometres are thought to have been lost, while other stretches remain protected to varying degrees. Antiquarians and later writers have offered different interpretations of the Giant’s Hedge. William Borlase and others once suggested that it might have been a Roman road, but modern interpretation sees it more convincingly as a pre Norman boundary or ancient earthwork. Its line often runs below hill crests and through a landscape rich in older remains. English Heritage has noted that the earthwork follows the line of an ancient track and passes near Bronze Age barrows, raising the possibility that parts of the route may have much earlier origins. The name Giant’s Hedge reflects both the scale of the monument and the folklore attached to it. A traditional rhyme says, “Jack the Giant having nothing to do, built a hedge from Lerryn to Looe.” Another version gives the work to the Devil instead. These stories are not historical evidence, but they show how local people explained a structure too large and old to fit easily into ordinary memory. Like many Cornish monuments, the Hedge gathered legend around itself because its original builders and purpose had long been forgotten. The route has also been described as one of Cornwall’s oldest roads. In some places, the line cuts deeply into the earth, with exposed bedrock and channels worn by centuries of water and movement. Fields sit high above sections of the bank, making the word “hedge” feel modest for something so large. Over time, sections have been adapted into lanes, absorbed into farming boundaries, or hidden beneath vegetation. Other stretches remain away from regular footpaths, known mainly to local people, walkers, and those who go looking for them. Today, the Giant’s Hedge remains an important survival from Cornwall’s deep past. Its exact date and original purpose are still debated, but its significance lies in the way it combines landscape, boundary, movement, folklore, and long term human use. It may have begun as a prehistoric route, later strengthened or reused as a territorial marker. It may have served different purposes across different periods.