http://www.dezeen.com/2013/11/23/lucid-stead-installation-by-phillip-k-smith-iii/
http://www.dezeen.com/2011/11/04/yucca-crater-by-ball-nogues-studio/
http://www.dezeen.com/2011/11/04/yucca-crater-by-ball-nogues-studio/