Flying to South Africa These are the great circle route - the direct lines between two points on the globe -
              for our field trip to South Africa. :(these lines do not represent the actual flight paths)

This map shows great circle routes (Encyclopedia Brittanica definition, Wikipedia definition) from BOS to JBR to PLZ and GRJ to JBR. Great circle routes are the shortest distances between locations on earth. These lines do not represent the actual flight paths.