If there isn't, then your mods are likely not downloading correctly. Go in there and see if there's anything in there. In there, you should be able to locate a file folder fairly quick-like entitled Mods. If Mac has a 'My Documents' equivalent and/or a 'My Games' equivalent anywhere, try going there and locating a file folder for Sid Meier's Civilization V (with or possibly without the Sid Meier's part). If you have any experience with a Windows system, then this might be able to help you. I run on Windows and not Mac, so please, bare with me.