Tour guide Stevie Corr leads a tour to view the underground wall separating Catholic and Protestant dead in the City Cemetery. PICTURE: MAL MCCANNAn underground wall built to keep Catholics and Protestants apart in death has been briefly unearthed for visitors to Belfast City Cemetery. Tour guide Stevie Corr leads a tour to view the underground wall separating Catholic and Protestant dead in the City Cemetery. Underground wall separating Catholic and Protestant dead in the City Cemetery opened up. Tour guide Stevie Corr leads a tour to view the underground wall separating Catholic and Protestant dead in the City Cemetery.