That's pretty sweet! I have to wonder about an abandoned UFO base. Why was it abandoned? It looks like whoever abandoned it left in a hurry, since they seem to have left a flying saucer behind. What could have forced them out like that? The players should have a ton of fun figuring that stuff out!
I had some vague idea that the aliens left the craft there as a sort of spare, since they seem to crash their flying saucers with distressing regularity. :)http://www.sacred-texts.com/ufo/crashes.htm