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Winter solstice simulation at Brú na Bóinne
Newgrange was built over 5000 years ago.
Above the entrance to the passage at Newgrange there is an opening called a roof-box. Its purpose is to allow sunlight to penetrate the passage and chamber at sunrise around the Winter Solstice.
Scaled for VR.
Flickr album https://flic.kr/s/aHskMP26qe
More info on Newgrange & winter solstice phenomenon
Check out the source model and the excellent work of Discovery Programme here; https://skfb.ly/BXXJ
model provided by The Discovery Programme: Centre for Archaeology and Innovation Ireland