Archaeoastronomy in the British Isles - The Stones and the Stars: Building Scotland's Newest Megalith - page 55

F IG . 4.9 Tara entrance passage, Mound of the Hostages
F IG . 4.10 Tara passage, Samhain and Imbolc quarterdays (Feb 3 and Nov 3)
be unique, it could be dismissed as a piece of theatre, not the prod-
uct of systematic observation. Even that didn't really stand up to
examination; but the multiple examples we now have recall the
exasperated comment of the Apollo astronaut, when asked yet