Here's another one...a bit larger.

LINK TO VIEW (too large to post here)
http://www.andolaurina.com/rendersamples/terradome3.jpg

Again, I didn't spend much time on this at all.  Dies Nefastus from another angle and added the Sun Tower textures from DAZ and the base.  Rotated the Skydome to get a little different view.  Same texture on zones 1, 2 and 3.  Same skydome sky.

This time I added "Advanced Atmosphere".

Rendered with IDL, same render settings as the last one.

This time it took almost 2 hours to render - yikes!  IDL took forever to calculate.  Me thinks that was the Advanced Atmosphere addition (although well worth it) or possibly the higher res Sun Tower materials.

I made no adjustments to lighting or the Sun Tower textures (which need work).  And, if I had to do it over, I'd mess with the camera more (focal length, etc.) 

No postwork.  Feel free to give feedback, especially if you can figure out the weird aliasing issues on the Dies Nefastus columns.

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