The symbol is a unalome, a representation of the journey to reach enlightenment. The path starts in the centre of the spiral, and as you continue up or down this path you are wandering, becoming more conscious of your surroundings.
Unalome - A symbol of reaching enlightenment. The path starts in the middle of the spiral and continues as you wander through the spirals. Eventually you reach the end of your path (the straight line) meaning you have been enlightened.