Our drive back to Hillsbourough, was a trip back in time- more than the imagination could even fathom.
As the luck of the Irish would have it, not taking the tour had us arriving at the the Newgrange visitors center in time to get the very last five stickers allowing us to visit the monument. I hadn't realized, that unlike other tourist spot where you show up and join whatever is happening at the time, here they cleverly limit the number of people that visit each site. Frustrating to those behind us that day, but those stickers with the times to be at the bus stop that takes you to each of the monuments made it so that small groups could really get more out of the guided tours and the grounds of each passage tomb. The UNESCO heritage site is older than the pyramids in Egypt and Stonehenge. Like those two well known examples it proves that prehistoric doesn't necessarily mean primitive. These feats of engineering have lasted over 3000-5000 years.