I believe there's a few Oranbega maps with the "jail room"... Considering that you haven't seen any of them, I'm guessing that they're not in due to front/middle/back issues.
@Johnstone & @Johnstone 2
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There are several of those in the AE I believe, lumped in with the regular CoT maps. The jail maps aren't unique or special or anything, they can come up in a random map selection. You have to figure out what the jail room looks like on the mini-map, in order to find them.
Eva Destruction AR/Fire/Munitions Blaster
Darkfire Avenger DM/SD/Body Scrapper
Arc ID#161629 Freaks, Geeks, and Men in Black
Arc ID#431270 Until the End of the World
I would caution you on using those maps though... I used one for a mission in my arc and people hated it even though it fit the story perfectly.
I ended up dropping the prison map for something a little less annoying.
It's an Oranbega map with those crystal jail cell thingies in it. The jail room has a bunch of bridges that go to each cell, it's a circular room and if I remember correctly has only one entrance/exit. Anyone know which map this is, and where I can find it in AE?