For the life of me I cant find it on Ricks site help please
You can find information in RS Italy guidebook. The title of the section is Night Walk Across Rome - Campo de' firori to the Spanish Steps. We are going to do part of it in May. It is several pages in description. If you don't have his Italy book, you can get it for pretty cheap on Ebay or Amazon used--just buy one that is a few years old-most basic info will have NOT changed except for prices. Good Luck!