Red Lake. Croatia.
This karst lake depth of 287 meters - the deepest lake in Europe.
Great Blue Hole. Located in the center of Lighthouse Reef, one of the atolls of the Belize Barrier Reef. The hole is a circular sinkholes diameter of 305 m, leaving a depth of 120 m. It has become known thanks to the French explorer Jacques-Yves Cousteau, who included it in the list of the ten best places in the world for diving.
Failure Bimah. This limestone crater filled with blue-green water, located in Oman. It is popular with tourists.
Failure is located 500 meters from the beach. Connected to the sea underwater caves.
Ikil. Located in Mexico. This is one of the most beautiful karst lakes in the world. The height of the wall is about 25 meters, and depth - over 50.
Dean's Blue Hole. Located on Long Island, Bahamas and is known as an ideal place for diving.
Dean's Blue Hole has a circular base with a diameter of 25 to 35 meters. After descending 20 meters into the cave it expands to a diameter of about 100 meters.
Lake morning delight (Morning Glory Pool). It is a beautiful lake, which is located in Yellowstone National Park in the United States.
The depth of the lake - about 7 meters. It's hot and it comes from the steam. His magnificent lake raznotsvete obliged bacteria living in it.