Wow, the map is big and surely was a ton of work to make. Great job!
The maps are in a hidden (dot) directory in your home directory. You can access it this way: Finder -> Menu Entry "Go" -> To Folder -> ~/.widelands/maps/
Thanks, I uploaded the map but something went very wrong. I uploaded my map but another map also called "Europa" got re-uploaded or something but with my name as uploader. Must be a bug. Can someone remove it from database? Should I just change the name of my map and upload it again?