Parque Arqueológico do Solstício(en.wikipedia.org) |
Parque Arqueológico do Solstício(en.wikipedia.org) |
This is not quite right. On that day the Sun is directly above São Paulo.
At the archaeological site: Latitude = +2.62°, Solar declination ≈ −23.44°, Difference = about 26.06°.
Therefore, at solar noon: Sun altitude ≈ 90° − 26.06° = 63.94°. Consequently, at that particular latitude, a normal vertical stone cannot have its shadow disappear because the Sun is directly overhead on December 21.
Göbekli Tepe (Turkey) ~9600 BCE Almendres Cromlech (Portugal) ~5900 BCE
I'm Brazilian, and this is the first time I've heard of this park.
Also, lol @ the name of the river near that site. (For the gringos: "Rego Grande", "rego" officially means ditch/trench, but nowadays it's much more commonly used as slang for butt crack. So, it's the Large Butt Crack river. Which I guess tracks for Brazil :P)
You may also like those other articles about Brazil which were posted on HN:
[...submitted title "Amazon Stonehenge: Parque Arqueológico do Solstício" kind of asked for it...]