https://blog.wongcw.com/2022/05/16/%e7%be%8e%e6%b4%b2%e7%99%bc%e7%8f%be%e8%bf%84%e4%bb%8a%e6%9c%80%e5%8f%a4%e8%80%81%e5%a4%aa%e9%99%bd%e8%a7%80%e6%b8%ac%e5%8f%b0%ef%bc%8c%e6%ad%b7%e5%8f%b2%e5%8f%af%e8%bf%bd%e6%ba%af%e8%87%b32300/
美洲發現迄今最古老太陽觀測台,歷史可追溯至2300年前