Board Thread:Questions and Answers/@comment-25287336-20150423124458/@comment-31035787-20150427123751

In the series they usually open the map to mark a waypoint. If they want to find their way back they will add a waypoint to the locations.

If you have watched the series there should be some point in time where they mark the coordinates so they can find their way back. If not, then I'm really not sure who knows. If it doesn't appear in the series itself it is even less likely that they've released the coordinates somewhere.