While the Cauldrons might be made up, Rhea is not. Just like Earth, Venus, Saturn, etc are real. Rhea is real, and it ain't circling Jupiter. I guess there *could* be The Cauldrons of Rhea on another moon that isn't Rhea, but that's just stupid. Like the Mountains of Cleveland being in Milwaukee. (And thus NOT being called by a more sensible name like... oh... say.... The Mountains of Milwaukee.] I take it no one has a legit answer. I'll re-ask in group then. Until then, I had a back-up theory in my pocket: [spoiler]The Nine, although Jovian, keep summer vacation houses on Rhea. While there on retreat, they will hold summits and councils. The prince felt it was easier to spy on them here, than on their more secure home world. [drops mic{ [/spoiler]