Newgrange in Ireland predates Stonehenge and the Pyramids. Built in a dome shape with a grassy top, it contains a long, narrow tunnel that leads into a cross-shaped inner chamber. When the sun rises on the Winter Solstice, the tomb entrance allows in a beam that causes the passage to glow. This golden light moves from the ground to the window area and then the rear chamber in a 17-minute Neolithic light show. http://hubpages.com/holidays/Celtic-Christmas-Traditions
Passage Tombs of Ireland – Newgrange – County Meath
Once a year, at the winter solstice (around December 21 or 22), the rising sun shines directly along the long passage of this megalithic tomb, illuminating the inner chamber and revealing the carvings inside. The most impressive of these is the triple spiral on the front wall of the chamber. The spiral is also a prominent feature of the entrance stone. The Newgrange Passage Grave in Meath, Ireland was built around 3200 BCE.
Built by the local villagers in the Taihang Mountains, the Guoliang Tunnel Road is a meter long tunnel about 5 meters high and 4 meters wide. Taking five years to complete, some workers were killed in the process.
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