At 8:58 am on December 21st, 1969, the first ray of direct sunlight shone through the roofbox and into the passage of Newgrange tomb, illuminating the floor as far as the front of the basin stone in the end recess, as observed by Professor M.J. O'Kelly. Brú Na Bóinne is an archaeological landscape in Ireland that contains three large Neolithic passage tombs - Newgrange, Knowth, and Dowth. It has been designated a UNESCO World Heritage Site due to the outstanding universal value of the prehistoric monuments and other archaeological features in the area.