ZME Science on MSN14 天
GeoPicture of the week: Biggest crystals in the world
Known as Cueva de los Cristales (Cave of Crystals), this hidden chamber in Mexico holds some of the largest natural crystals ...
PlanetMountain6 年
The crystal cave: searching for the Naica treasure
The Mexican C/Producciones has produced films for some of the world ... maybe the only way to visit once it is no longer accessible due to the end of mining activities. Giant crystals The amazing ...