Based on the Discovery Project in the new Affnity Photo Workbook, I placed the scene on one of the four main moons of Jupiter. I'm a fan of Stanley Kubrick, 2001: A Space Odyssey is one of the best science fiction movies ever. No further monolith was found in this cave, but something very spectacular. There is also a wonderful view
http://b-bertuleit.de/discovery-jupiter-mission/