2016 Winter Solstice Observations.    3. Iwaya-Iwakage and Senkoku-ishi


Ed. Note:  This is the concluding section of our three-part report on winter solstice observations, 2016.

Winter Solstice 2016.12.21    

Iwaya-Iwakage.  10:25 am.  We have just returned from the climb up Higashinoyama. The light of the sun rising from the mountain is beginning to strike the Iwaya-Iwakage megaliths while the lower foreground is still in deep shadow. The sun rises from the mountain at 10:15, and it was ten minutes later. This spectacle is superbly calculated. The location is well-suited for receiving the light of winter. Shapes that illuminate the megalithic group are made from the time the sun rises from the mountain until it sinks. It’s hard to believe, but it is happening here.

24-951a2160Inside Iwaya-Iwakage, light is entering into the chamber. From inside at the back of the inclined surface, looking at the sky in the south, you can see that the sun is entering below this inclined surface. This tilt is set in accordance with the sun’s position 60 days before the winter solstice, so that it is very bright inside.

Senkoku-ishi   Evening, around 4 o’clock at Senkoku-ishi.   Sunset light has hit the B and B’ boulders. Originally the one stone was broken and is now sitting in two parts called B and  B’. The part of the V where the light hits  may mean that the original stone was placed  there to capture light of the sun at the time of winter solstice.

Approximately 4:10 pm.   The sun will soon hide in the mountains. It is possible to watch it from the mountain, up to near the time (4:30) when the sun sets to the horizon, because of the position of the megalith group in the mountain valley. This is also the place where, in the opposite direction, the summer solstice  sun will rise. I think it can be said that the place has been carefully selected for the megalithic group!

Ed. Note:  This ends our three-part report on Winter Solstice 2016. A new year begins. Happy New Year to all our readers!



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