These 4 Million Shells And 70 Feet Of Secret Tunnels Remain A Mystery After 179 Years

I love a good mystery. Some of my favorite historical mysteries still remain unsolved.

How did Stonehenge get there? How were the pyramids built so perfectly? I love the excitement involved in trying to solve history's greatest puzzles.

So when I stumbled upon this amazing mystery, my jaw hit the floor. Where did this amazing feat of craftsmanship and architecture come from? Who built it, and how? And why would anyone go through the trouble of hiding something so enormous and elaborate?

In 1835 in Margate, England, James Newlove was digging in his field when his shovel suddenly disappeared into a surprising hole in the ground. Completely taken aback, James decided to investigate this mystery hole. He tied a rope around his son Joshua's waist, handed him a candle, and lowered him down to investigate. What Joshua discovered in this hole? Absolutely unbelievable…

This incredible story and these mind-blowing photos delve into one of the most spectacular unsolved mysteries of the last two centuries.

Please SHARE if you think what Joshua found is as amazing as I do!

When Joshua was lowered into this mysterious hole, he was shocked to discover a winding underground tunnel intricately covered with millions and millions of carefully placed shells!

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Flickr / Kotomi

James and Joshua Newlove had stumbled upon the Shell Grotto. Where did this grotto come from and how did it end up below a farmer's field? The mystery surrounding the Shell Grotto quickly made it one of the biggest tourist attractions around.

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The Shell Grotto Margate
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The Shell Grotto Margate

James Newlove took full advantage of the marketing appeal of the Shell Grotto and opened it to the public in 1838. Part of its appeal came from its surprise appearance. These tunnels never appeared on any map and no one had ever heard stories of its construction.

Visitors to the mysterious underground chambers were greeted by 4.6 million shells and 70 feet of winding tunnels! Ornate mosaics adorned every wall and were made from mussel, oyster, whelk, cockle, and even a few rare queen conch shells.

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The Shell Grotto Margate

The unexplained nature of the Shell Grotto drew all kinds of people — including these women performing a seance in the grotto in the 1930s.

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The Shell Grotto Margate

Today, visitors continue to climb down into the Shell Grotto to explore its chambers, but its origins still remain a mystery.

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The Shell Grotto Margate
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Flickr / Ben Sutherland
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Flickr / DeadManJones

Because of the scope of building such an undertaking, the people of Margate would certainly have noticed if construction materials and millions of shells were being utilized in the middle of a farm field. But the lack of any knowledge on the part of the townspeople only adds to the mystery!

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Flickr / Krondol

Over the years, rumors surfaced that perhaps the Shell Grotto was a smuggler's cave used for hiding stolen treasure. But the grotto is located extremely far inland, away from the sea, making it hard to reach with booty. And even if it were a smuggler's cove, this wouldn't explain why it was so meticulously decorated in shells.

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Flickr / Kotomi

Each of the shells was affixed to the walls of the grotto using one of five different types of mortar. Though beautiful, the shells appear extremely dirty. After years of lighting the Shell Grotto with gas lamps, the shells were left covered in layers of carbon deposit.

Most of the Shell Grotto lies less than six feet below the surface underneath a layer of concrete. The concrete, which was applied in the 1980s, accidentally increased damp conditions in the grotto, causing damage to the incredible mosaics.

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Flickr / Simon Lee

As a result, a massive conservation effort has been underway to repair damage to the Shell Grotto and keep it preserved for years to come.

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The Shell Grotto Margate

To this day, the origin of the Shell Grotto of Margate continues to baffle historians. It remains one of the most beautiful mysteries of the past 200 years!

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Flickr / Kevan

Please SHARE if you find this incredible Shell Grotto as amazing as I do!