This furnace, in the water battery on the east side of the Castillo, heated cannonballs red hot to be fired at wooden vessels.
Photo Credit: NPS Photo
Photo of Castillo de San Marcos
Castillo de San Marcos
11 South Castillo Drive, Florida 32084 USA
11 South Castillo Drive, Florida 32084 USA
This furnace, in the water battery on the east side of the Castillo, heated cannonballs red hot to be fired at wooden vessels.
Photo Credit: NPS Photo