The top illustration of the lair tunnel was A LOT of fun to paint. Seriously! Who could not have fun painting this. My job was easy since I had an amazing layout by Justin Thompson. This tunnel represents the original tunnel that leads into Flints lab. But this environment is all made of rock candy. Lots of reflections, bounce light, and sparkles. :)
The bottom left is a visual development illustration of the tunnel/big rock candy mtn. exterior. Although it was never used in the film, it sure help us understand what the interior would look like.
Lastly, the bottom right is an early color-script panel of when Flint finally meets up with his old friend in the lair.
Thanks for kind words, new follows and awesomeness! Enjoy