code: def _log_board_terrain(self, terrain):
          
          self._logln('terrain: {0}'.format(' '.join(t.value for t in terrain)))
docs: Tiles are logged counterclockwise beginning from the top-left.
          See module hexgrid (https://github.com/rosshamish/hexgrid) for the tile layout.
  
          :param terrain: list of catan.board.Terrain objects