A very deep – at least 5 feet – sinkhole has formed at the intersection of Grays Ferry Ave. and Christian St. on Gray's Ferry. It has also undermined the area surrounding it and the pavement looks like it will collapse inward any minute. There is a large crack going from the sinkhole to a PECO manhole cover. The base of the stoplight also looks like it could be compromised. A pedestrian could easily step into this and be up to their neck.