If these so-called "extremophiles " can form and thrive on our planet in challenging conditions, then chances are good that microbes can exist on other worlds in similar conditions. Giant Crystal Cave is the home to some of the largest natural crystals discovered on earth and the crystals are made of selenite, a type of gypsum. The Naica Mine of Chihuahua, Mexico, is a working mine that is known for its extraordinary crystals. Caves around the world contain information in various forms about the ancient history of planet Earth as if markers in time. Deadly And Giant Crystal Cave Mexico. Yet, as Cave of the Crystals demonstrates, microbes can survive extreme conditions, such as in desert regions or deep underwater, or even encased in rocks and minerals. What is an astrobiologist? It is probably Plato's best-known story, and its placement in "The Republic" is significant. Its floor is covered in crystalline, perfectly faceted blocks. Hidden within caves we find: Chambers Tablets - Artifacts - Scrolls - Texts - Crystals The word 'cave' is sometimes a metaphor for the mind, hidden within is sacred knowledge that yearns to be discovered. Some of these are infilled with color—others are not. The famous Hall of Bulls (below) is large enough to hold some fifty people. In other portions of the Lascaux cave, artists carved lines into the soft calcite surface. The viral communities in the Cave of Crystals are actually inside the bacteria or archaea. Naica is a lead, zinc and silver mine in which large voids have been found, containing crystals of selenite (gypsum) as large as 4 feet in diameter and 50 feet long. Mexico's Cave of Giant Crystals. Scientists and researchers have been actively working in the Cave of Crystals since 2001, and continued to do so until its confirmed flooding in 2017. Its floor is covered in crystalline, perfectly faceted blocks. However, this out-of-the-world sight can be witnessed only with the assistance of specialists, as climbing the huge crystals is not an easy task. The Allegory of the Cave is a story from Book VII in the Greek philosopher Plato's masterpiece "The Republic," written in B.C.E. 517. Crystal Cave Mexico or a Giant Mexican Crystal Cave of swords attached to the Naica Mine, at a depth of 300 meters (980 feet) in Naica, Chihuahua, Mexico.. It is also described as Spanish: Cueva de Los Cristales, So we Discuss in detail about Mexican cave crystals.. Why are the selenite crystals important? Using uranium dating, scientists were able to determine that the crystals were 500,000 years old. The largest crystal of Giant Crystal Cave is said to reach a length of 12 metres (39 feet), a diameter of 4 metres (13 feet) and is believed to weigh approximately 50 tonnes (55 tons). Other “rooms” and “halls” are extraordinarily narrow and tall. 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