The beauty of most of these lesser-known wonders is that there are generally less tourists obstructing your view. You may not be able to name some of these magnificent sites from their photograph alone. Watch the video slideshow below to learn more about how formations like this come to be and why they are so rare. The video takes you all over the world from the alien landscape (and some might say unnatural, due to the fact that it was created by Soviet drilling efforts) called the Gates of Hell to a largely undocumented barrier reef much closer to America than Australia’s Great Barrier Reef.
Image from Michael Wifall, xoque on flickr