These tombs are an easy bus ride north from Dublin and should be on everyone’s must do list. The visitor’s center at Bru na boinne is world class and comes with a nice cafeteria for the inevitable hunger attack. Since it was positively freezing the day I went, access to warmth and tea was a lifesaver.
Knowth consists of a large mound surrounded by 18 smaller mounds. The large mound’s base is surrounded by large carved kerbed stones while their top is verdant grass that hangs down the mushroom shaped mound like thatch in a Tolkien fantasy. The top of the mound has hosted a church, a village, and even a small fortification, as it lay buried through the ages. It was just a high point on an otherwise flat plane. There are two passages into the tomb, one from either end.