It's called the border between Heaven and Earth! The Beauty of Bolivia Expressed in 50 Professional Photos. Marvel at the Magnificent Marble Caves [35 PICS] Can you imagine something happening that would endanger these exquisite azure caverns?
![Marvel at the Magnificent Marble Caves [35 PICS]](http://cdn.pearltrees.com/s/pic/th/marvel-magnificent-marble-13121097)
It might if Chile continues with plans to build five hydro-power dams in Patagonia. Photo #7 by © Jorge Leon Cabello The water has eroded the marble to create cavities and marble caves. There are different color shades, depending on the contents’ impurities. Crystal River - The most beautiful river on earth [Pics] Cano Cristales - Crystal River.
![Crystal River - The most beautiful river on earth [Pics]](http://cdn.pearltrees.com/s/pic/th/crystal-river-beautiful-earth-12588167)
River of five colors, as the locals call it, originates in the south of the mountain chain Macarena, Colombia, and flows eastward to its confluence with the Guayabero river. In the Cano Cristales found five colors: yellow, blue, green, black and red.