Underground tunnel at Fort Moultrie, part of the Fort Sumter and Fort Moultrie National Historical Park, in Sullivans Island, South Carolina on Friday, February 8, 2019. Copyright 2019 Jason Barnette
Underground powder magazine at Fort Moultrie, part of the Fort Sumter and Fort Moultrie National Historical Park, in Sullivans Island, South Carolina on Friday, February 8, 2019. Copyright 2019 Jason Barnette
