A remarkable collection of Revolutionary War artifacts that lay hidden beneath the Savannah River for nearly 240 years is now on public display in Georgia's oldest city as the nation marks America's 250th anniversary, according to Fox News.

The Savannah History Museum officially unveiled 19 cannons recovered from the river as part of its new Loyalists & Liberty: Savannah in the American Revolution exhibit. Historians say the discovery represents the largest cache of 18th-century artillery ever recovered from a single Revolutionary War naval event.

Fox News wrote that the cannons were discovered unexpectedly in 2021 after crews with the U.S. Army Corps of Engineers uncovered them while dredging the Savannah River to deepen the shipping channel for larger cargo vessels.

"When they were recovered, the cannons were heavily encrusted with oyster shells and marine growth after centuries underwater," said Nora Fleming Lee, CEO of the Coastal Heritage Society. In addition to the artillery pieces, crews also found smaller artifacts, and several of the cannons still contained cannonballs and their original gunpowder charges.

Following their recovery, most of the cannons were transported to a preservation laboratory at Texas A&M University, where conservators spent several years removing salt from the iron through a specialized electrolysis process before stabilizing and protecting the metal for long-term display.

Seventeen of the cannons underwent full restoration, while two were intentionally left in their original condition so visitors can compare how they looked when first pulled from the river. All 19 are now permanently exhibited at the museum.

Researchers believe the weapons came from British ships that were deliberately scuttled in 1779 to create a blockade across the narrowest section of the Savannah River. The barrier was intended to prevent French naval forces from sailing upriver and helping American troops retake Savannah, which was then under British control.

The ships are believed to have been sunk only weeks before the Battle of Savannah, one of the deadliest engagements of the Revolutionary War, where more than 800 casualties were recorded in less than an hour. The battle took place on the same grounds where the Savannah History Museum stands today.

Museum officials say the exhibit goes beyond showcasing military artifacts. Through the stories of Indigenous people, enslaved and free Black residents, women, children and other overlooked figures, it explores Savannah's role in the American Revolution from multiple perspectives, using the recovered cannons as a centerpiece to tell a broader and more inclusive story of the nation's founding.