Strange sand ‘chess pieces’ on the shore of Lake Michigan. Here’s how they’re formed.

Sand pillars adorn the shore at Lake Michigan in Tiscornia Park, with the North Pier Lighthouse in the background, in St. Joseph, Michigan. Credit: Terri Abbott

Bizarre sand sculptures rising from the beach at Lake Michigan caught the attention of at least two photographers in early January, who posted their photos of the natural wonders online.

But what are these sand sculptures and how on earth did they come about?

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