Rebecca Bashly's Arctica Dreams is a huge lit space underground ice cave which contains three dimensional sculpture, shapes, and patterns which interplay with light. You first arrive on an icy island (below) with one sculpture -- and then jump through a hole in the ice to arrive underground.
I achieved these different color effects though various sky settings in the Firestorm viewer. Make sure to play around with your light settings (time of day) in world to see how different the installation looks with different aspects of sunlight.
Arctic Dreams will stay up through January 11. You can visit it here:
Jeff Ellsworth has also reviewed Artica Dreams here and has some very good photography: