Blackbeard's cannon rises again
A one-ton cannon from the wreck of the pirate Blackbeard's ship is to be salvaged after lying on the ocean floor for nearly 300 years.
The Queen Anne's Revenge Project, named after the flagship which sank off North Carolina, has been working since 1997 to recover artefacts from the wreck.
The cannon will be on public display in front of the state Maritime Museum before being taken to a laboratory for further study.
After nearly three centuries underwater, the cannon has become encased in a cement-like shell of sand, salt and aquatic creatures.
It could take years for researchers to learn exactly what the shell contains in addition to the cannon.