This project has reclassified the delicate designs of London’s manholes. The book creates a new visual classification system inspired by Jorge Luis Borges. Designs are grouped on whether they may trap rats, break high-heeled shoes, personal favourites and ones which may possibly destroy screwdrivers. The front and back cover were printed directly from the manhole covers. There is also a poster included which visually indexes all of the designs found within the book.