Here is some more information, as found here on Flickr:
"It was created originally to commemorate the one year anniversary of the World Trade Center tragedy and offers the public a way to reflect, honor and heal. The labyrinth path is outlined with 1,148 granite blocks that form seven circular rings. Designed by Camino de Paz Labyrinths, it runs approximately 358 feet to the center core and then 358 out again to the entrance.A labyrinth encourages contemplation on a journey with a clear destination. It's goal is to create an internal balance generated by the rhythm of the walking and the mental state of no decision-making. The labyrinth sits within Jerusalem Grove--a grove of 11 Blue Atlas Cedars (Cedrus atlantica 'Glauca'). The cedars were a gift from Israel and dedicated on July 8, 1976."