The world's three coolest black sand beaches

1.Diamond Beach

Iceland is known to be a volcanic country with the largest glaciers outside of Antarctica and Greenland. In the southeast of Iceland, covering 8% of the country's Vatna Icefield, lies its largest and most famous glacial lake. The scenery is as ethereal as a wonderland, making it the setting for action or superhero movies such as "James Bond: The Man from U.N.C.L.E." and "Batman: Hour of War".

2.Punaruru Beach

The lava that flowed into the ocean when the volcano erupted instantly cooled to form basalt, giving birth to this beach. It is said that in ancient times, during times of drought, the Hawaiians who lived here would dive into the water with their water bottles to obtain the fresh underground water that flowed under the beach. The beach is dotted with freshwater caves, lava formations, ancient burial grounds and temples, and is indeed worth a visit.

3. Rovinha Beach

Indonesia has the most tranquil beach in Bali, formed by the cooling of black sandstone from the eruption of Mount Agung near the small town of Rovina, and is a favorite destination for divers. For those who don't know how to dive, there is something about renting a boat and going 500 or 600 meters into the sea to see the coral. You can feel the magnificence of nature without being in the water, with the coral reefs at a depth of more than 10 meters. Tranquility, and therefore more and more popular with tourists!