Yesterday morning, I went over to St Brigit's and walked the labyrinth. I was all alone, the sun was shining, and I found myself thinking about what Joseph Campbell called the Hero's Journey.
This made me think of Odysseus' travels. When he has been trapped on Calypso's island for years and years, and has nearly given up on ever returning home, he is actually quite close to the end of his journey. When he has come within sight of Ithaca, his men accidentally let the winds out of Aeolus' bag, and send him far, far away again.
The original Chartres Labyrinth is found at the beginning of one of the pilgrim's paths to Santiago de Compostela. For some, it was probably all they could do of the pilgrim's journey because of infirmity, or obligations at home. It signifies a sacred journey, and a journey of discovery, just as Odysseus' journey was for him.