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Mt. Kelimutu in Indonesia Volcanoes aren't unusual in Indonesia, one of the world's most geologically active countries. Mt. Kelimutu, however, manages to stand out with its three crater lakes, each a different color. Adding to its kaleidoscopic appeal, chemical reactions spurred by volcanic activity cause the lakes to change color. What color and when remains unpredictable. Pamukkale in Turkey In Turkish the name literally means Cotton Castle and it is easy to see why it was given that name. Yet this geological wonder is also the site of the ancient city of Hierapolis and over the centuries the two have seemed to come together, almost merged into one the site itself is a series of travertine and hot springs. The travertine here have a concentric appearance and are almost sheer white giving the area an ethereal appearance. The hot springs precipitate calcium carbonate at their mouths and produce the strange almost organic looking structures.
Dean's Blue Hole in Bahamas There may be bigger and more impressive blue holes, but Dean's Blue Hole on Long Island in the Bahamas is the world's deepest at more than 600 feet deep. Blue holes, named for their vibrant color as seen from above, are subsurface voids that contain fresh, marine or mixed water ? ]^ [??[?? ?XH]?[ ?^H\?H?[? ? H ?\??X?H[?X^H ??YHX??\?? ? ?X?Y\??Y?]?\????X]? YH?H[??[^?H\?? HY? ?\?H?YY??\?[KH?X]? YH?HY\?\ ??[X][ H
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