The basalt columns look too perfect and regular...maybe if you randomly 
translated them some...or you could use vturbulence() or eval_pigment() 
to turbulate the prism points, just make sure they stay in the right 
plane.

-- 
Christopher James Huff - Personal e-mail: chr### [at] maccom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://homepage.mac.com/chrishuff/
TAG Web page: http://tag.povray.org/

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