The holes in the sanctuary flooring form a design meant to look like a tribal symbol. These were air holes for escaped slaves who would hide in the church, interpreted as in the pattern of a Kongo cosmogram, which served as a stop on the Underground Railroad (UGR).
The sanctuary floor features designs with air holes meant to resemble tribal symbols. These were used by escaped slaves who hid in the church, interpreted as elements of a Kongo cosmogram, serving as stops on the Underground Railroad.