Irish monument marking both the rising and setting solstice sun — and it's not Newgrange
Knockroe in Lingaun Valley between Tipperary and Kilkenny has a dual Winter Solstice alignment, with the eastern passageway aligned with the rising sun, and the western passageway aligned to the setting sun
Frank Prendergast Muiris Osullivan Neil Jackman Anthony Stevens Tuatha Tuathaireland Wintersolstice National Monuments Service Nationalmons
Source: irishexaminer.com