Knowth is slightly older than Newgrange, and unlike Newgrange, the site was in more or less continuous use from at least the Neolithic thru the Middle Ages. That means the site is far more disturbed than Newgrange—but it also has the most megalithic art in Europe—nearly every large stone that 4/

Lines the outside edge of the mound (kerb stones) has carved art all over it! There is also art on the stones that line the passages, and on the large basins which held human remains—& which were placed BEFORE the mounds were built. 5/