Giant's Grave (St. John's) | Culture Vannin | Isle of ManHome | Explore More | QR Places The Giant's Grave is a Bronze Age burial mound which today forms a part of the wall on the road behind Tynwald Hill. The significance of this mound standing first became apparent in 1848 when improvements to the road revealed https://culturevannin.im/exploremore/places/giants-grave-st-johns-717696/