Tham Lod Cave
> Location: Thailand
Tham Lod is a huge river tunnel with three dry caverns. The cave walls are more than 65 feet high. A recently excavated site near the visitor center is said to be a rock shelter where a human skeleton 20,000 years old was found.
Vatnajökull Glacier Cave
> Location: Iceland
The Vatnajökull ice cave, the largest glacier cave in Iceland, is nicknamed the Anaconda Ice Cave for its shape, long and winding like a snake. It is also called the Crystal Ice Cave, a name it shares with other Icelandic glacier caves.
Reed Flute Cave
> Location: China
The Reed Flute Cave in Guangxi, which is more than 180 million years old, is known as “the Palace of Natural Arts.” The cave, named after the lush reeds growing outside, has been a major tourist attraction in China for many decades.
Saalfeld Fairy Grottoes
> Location: Germany
The Saalfeld Fairy Grottoes are located in the German state of Thuringia. They were the site of a mine where shale was removed from the ground. The mine closed in the mid-19th century, but it was reopened in 1910 and the remaining minerals created a fairytale-like effect, transforming the grottoes into a colorful underworld.
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