Inner Courtyard - #4
one of the five walls of Fort Pulaski a pentagon shaped structure with 60 casemates, sometimes rendered casement, which were fortified gun emplacements or armored structures from which guns are fired. Originally
referred to as a vaulted chamber in a fortress.
From what I was able to find out only 20 of these casemates were used.
The wall we are facing had the most structural damage during the siege as is evident on the upper wall where one of the cannons is located.