Look closely for any signs of roof or rib hazards. Look for, and report any areas that may need rescaled. Never Go Under Unscaled Roof Try to look from several angles without positioning yourself in a dangerous area to do so. Look for scaling tracks on every square foot of roof, ribs, and face. Ledges Loose rock can be present on ledges.
Ledges indicate a section of layered rock.
Ledge lines may be difficult to see, or look different from different angles. Ledges are an area that pose a rock fall hazard. The area was not properly marked or barricaded. Lack of knowledge. To take a shortcut to another area.