Make your Mark on the World (Map)!

OpenStreetMap is an open-source, online map of the World! (Think Wikipedia... but as a map!) Mapping Parties are community events targeted at getting more of San Diego mapped the way you want it mapped! You come along, we loan you a GPS unit and show you how to use it (it's easy!) and then you go out mapping an area of your choosing. You come back at the end of the day and we show you how to get that data into OpenStreetMap.