Taj Mahal Himalaya Backwater Seeshore Red Fort Delhi
Blue Hole In Gaum


 

Blue Hole In Gaum

Blue Hole In Gaum


Blue Hole In Gaum is the important island. Guam is the southernmost island in the Mariana island chain and the largest island in Micronesia. Guam's Blue Hole is a natural limestone vertical shaft formed millions of years ago which extends down into the reef. The opening is approximately 35 x 25 feet. The upper reef varies in depth from 20 feet near the cliffline, to 55-60 ft at the upper opening of the shaft. From there, it drops downward to 300+ feet.





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