Underground cave lined with millions of shells is one of the UK's most baffling mysteries
The underground cave, also known as the "Shell Grotto," was discovered in the 19th century, but its origins remain one of the ...
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There's an underground grotto in the UK that's covered with millions of seashells - and no one knows who made it
The Shell Grotto, located in Margate, Kent, in the UK, is a stunning underground grotto elaborately decorated with 4.6 million seashells. Once you enter the subterranean world, you'll be able to ...