Just within the boundaries of the modern Lexden Park, through which runs the innermost of the ancient defensive earthworks of Camulodunum, known in part of its course by the name of Blue Bell Grove, and formerly Hollow Way, lies the tumulus, the excavation of which in July and August 1924 is the subject of this paper. It lay within the great west field of the town, which apparently was not made several till late in the seventeenth century. In 1758 it lay in Mr. B. Evans's paddock. In 1838 the field in which it then lay was called Round Field Hill, which was absorbed into the Park in 1860.