Ha! No, but that's funny.
I always that that was you adapting the prison from the D&D cartoon...
Here's a cool site I wanted to use for a fantasy city someday, a city based on a plug/pillar in an extinct volcanic crater: http://www.jessevandijk.net/g_08_76.htmlHuh. That's very similar to a tomb I conceived for one of the old AEG Adventure Keep products (Out of Body, Out of Mind, for those interested). My volcano was still active though.
You know something? I have that AEG module ... and it is awesome.
The players I ran it for, they absolutely hated it because the whole thing was just one giant deathtrap.
Mind you, they were not the most intelligent of players ... their idea of strategy was "hey diddle diddle, straight through the middle".