https://blog.wongcw.com/2022/07/20/%e6%b4%9e%e7%a9%b4%e6%8e%a2%e9%9a%aa%e5%ae%b6%e7%99%bc%e7%8f%be%e4%b8%80%e5%ba%a719%e4%b8%96%e7%b4%80%e6%99%82%e6%9c%9f%e9%88%b7%e7%a4%a6%ef%bc%8c%e4%bf%9d%e5%ad%98%e5%ae%8c%e5%a5%bd%e5%a6%82%e5%90%8c/
洞穴探險家發現一座19世紀時期鈷礦,保存完好如同時間膠囊