A grub splash screen based on the work of Hieronymus Bosch. The splash screen depicts a detail from the painting named 'The Ascent into the Empyrean'
Currently, I believe you need to manually edit your grub.conf file or menu.lst in order to get this to appear during boot up.
Here's the section of my menu.lst file which I've used to display this image successfully
## Splash Image Section
# Note: this section was hand edited and should be the first
# place to check if there are errors
I've resized the tunnel image so that it fits withing the bounding box of the grub boot menu. I think this is a more visually appealing layout. There's a slight increase in image resolution too. The original version is still available upon request.