This one refused to finish rendering. I had to render it in pieces, and stitch it together. It's like the owner of this Keep didn't even want me messing with it. The wide version shows more of the maze.
This one has been sitting unfinished for a year, because the gray blast wave didn't like mixing with the fire, and kept crashing the computer. I figured out it would render once per loading of the image, only crashing the second attempt. So I reloaded after each test render, which let me finish.