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Gravestones used as flood control on Long Island beach

Since 1986, gravestones have been used to bolster jetties that fight erosion along the shoreline in Babylon, LI — but the eerie granite markers still continue to spark mystery.

A YouTube video was uploaded last week showing the somber monuments that read “At Rest” along Oak Beach and a picture of one of the tombstones has also made the rounds online — leading some to wonder if graves had been desecrated.

Not so, assured Brian Zitani, Babylon’s waterways-management supervisor.

“The stone in question is from our jetty reconstruction project that followed Hurricane Gloria,” he told The Post.

The town turned to tombstones because the state reclassified materials such as recycled concrete as waste — forcing officials to turn to a more expensive product, such as granite.

It asked monument companies and cemeteries to donate their damaged or misspelled stones.

Initially, things were rocky.

“People still had memories from the old ‘Poltergeist’ movie,” Zitani recalled.

That’s why the town’s protocol is to ask that donated stones have any identifying marks removed, then turn the gravestones backwards, and cover them with other stones and sand.

Any gravestones that make it to the shore with engravings still intact, will be blasted with air chisels once the town is notified, Babylon spokesman Kevin Bonner said.