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一滴水有2亿个病毒？来了解下墨西哥水晶宫殿
墨西哥巨型水晶洞，位于地下290米深处。洞内到处都是壮观的发光巨型石柱，直径4英尺，长度达到50英尺。洞内的巨型石膏晶体在数十万年时间里一直以极其缓慢的速度生长着。含矿物成分的高温水冷却过程中因石膏饱和而结晶析出。水晶洞内温度很高，其周围有温泉。据研究，从水晶洞再往下五公里左右就
游大好河山 品世界人文66/101
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