http://galleries.burningman.org/filestore/3/9/1/1/8_c4e7d3059b6873a/39118pre_d88eb1fdfba65a0.jpg?v=2013-08-23+19%3A06%3A25
Spiral Prism by Steve Moffet
http://galleries.burningman.org/filestore/3/9/1/1/8_c4e7d3059b6873a/39118pre_d88eb1fdfba65a0.jpg?v=2013-08-23+19%3A06%3A25
Spiral Prism by Steve Moffet