What is map of catacombs?

As an AI language model, I don't have access to visual information, so I can't describe a specific map of catacombs. However, generally speaking, maps of catacombs are diagrams or drawings that display the layout, structure, and features of underground chambers or tunnels used for burials or religious purposes. Catacombs are often large and complex, so maps are essential for navigation and exploration. They may include information such as the locations of graves, niches, chapels, and corridors, as well as other important features such as ventilation shafts, water sources, and escape routes. Maps of catacombs can be found in guidebooks, museums, and online resources for those interested in exploring or studying these historical sites.