Yep . Wormy Hillock henge is the same although the "serpent" and "Wormy" are modern associations . Diarmid's grave ,a four poster in Glenshee ,built on top of a moraine is another , lots of "fairy mounds "/ tom na sidhe etc with burials ,standing stones etc are often moraines .As well as the shape which may have been the inspiration .B.A . cists are found in modern gravel quarries where the shape is obviously not important but the material is easy to dig .