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Top 3 stone mysteries

Some of these mysteries are downright spine-tingling.

When it comes to stone, some things are clear cut:

  • Acid and stone don't play well together;
  • If you want your stone to last, you've got to take care of it
  • If you want to ensure surface protection, you've got to seal it with an impregnable, breathable sealer like Dry-Treat's STAIN-PROOF Original™

Other things are less so. The following are some of the greatest stone-related mysteries man has yet to explain. 

1. The mystery holes of the Whetstone Valley

In more than 50 holes scattered throughout South Dakota's Whetstone Valley, tiny and precise triangular holes have been cut, around six inches deep. The exactness and depth indicates they must have had to be drilled, but even more mystifyingly, it would have to have been done so using an alloy strong enough to drill through granite. 

Similar holes can also be found in western Minnesota and even countries as far away as like Scotland, New Zealand and Egypt. They have spurred on numerous conspiracy theories, from early visits by aliens to early European settlement of North America. While natural causes are offered as a solution, there is still no consensus on what the harbinger of the holes is or their purpose, with each theory falling by the wayside. 

2. The mystery stone of Lake Winnipesaukee

New Hampshire may be the granite state, but its most famous stone is probably made of quartzite. Looking for all the world like a modern art piece, the intricately crafted egg-like Lake Winnipesaukee mystery stone was originally discovered in 1872 by construction workers digging a hole for a fence post. Inside a strange-looking lump of clay was the stone. 

The black, beautifully polished stone is carved all around with symbols like corn, a teepee and what appear to be astrological signs, as well as a face. Much speculation has abounded about the stone's origins, with the ubiquitous aliens of course being offered as one explanation. Others have suggested it was a commemoration of a peace treaty between two tribes, a thunderstone or even hoax. It has been on display at the Museum of New Hampshire History since 1927. 

3. Stonehenge

In many ways, Stonehenge is the granddaddy of stone mysteries.The questions about Stonehenge, a thousands of years-old ring of enormous bluestone and sandstone monoliths in southern England, are numerous:

  • Who built it?
  • What purpose did it serve?
  • How did less technologically advanced cultures build it?

Theories have ranged from the fantastical – a monument built by Merlin to commemorate fallen knights – to the less wild – an astronomical observatory created by druids – to the downright pedestrian: Either a funerary or a place for the sick to go and heal. 

Over time, as more and more evidence has been discovered, scientists and archeologists are starting to get a clearer picture of the origins of Stonehenge. But many of its chief mysteries remain just that.

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