Hurricane Dorian skimmed the United States' East Coast last week, creating a trail of damage residents are still dealing with. But it wasn't just trash and debris the storm surges left behind: As WCSC reports, two cannonballs dating back to the Civil War were discovered on Folly Beach in South Carolina in the aftermath of the storm.

Aaron Lattin and his girlfriend Alba were walking on the beach on September 6 when they saw what looked like rocks nestled in the sand. As they examined them more closely, they realized they had found something much more special. The weathered objects were actually cannonballs that have likely been buried in the area for more than 150 years.

Incredibly, this isn't the first time Civil War cannonballs have been discovered on Folly Beach following a hurricane: In 2016, Hurricane Matthew unearthed 16 of them. Folly Island was used as a Union base a century and a half ago, and items leftover from the artillery battery built there are still scattered around the shoreline. The couple behind this latest discovery believes there are more waiting to be found.

Old cannonballs may look like cool artifacts to treasure hunters, but they should still be treated with caution. Police and bombs disposal technicians were called to the scene at Folly Beach to confirm the cannonballs were no longer functional.

[h/t WCSC]