Tōhoku Japanese Earthquake Sculpture
This sculpture was made to contemplate the 2011 Tōhoku earthquake and tsunami in Japan.
A sand tracing pendulum located at a shop in Port Townsend, Washington, called Mind Over Matter (since moved to Sedona, Arizona), produced some very interesting patterns.
http://twistedsifter.com/2013/01/the-earthquake-rose-pendulum-art/