I'm going to post a few maps here for posterity because they weren't posted on ENWorld and I went through the work of making them, but in the end I just wasn't happy with the results.
---
Here's the first one - done one weekend at a Feis (irish dance competition) while waiting for the youngest Gelfling to dance.
It is from a scene in the long-ago canceled psionics book I wrote. The empire in question had a massive crystal mine that they used (and then worked dry) to get crystal for psicrystals, dorjes, capacitors and so on. In the flavor text for the adaptive ooze, it describes one of these creatures errupting from the fortified mine entrance and killing a lot of the workers and guards before being put down by a group of psion law-bringers.
A thousand years later, here are the ruins of the mine entrance.
Starting from the bottom of the map:
Two guard towers. The construction of these is awkward and not that well thought out - the guard walks are aimed towards the space between them - obviously designed to watch over the traffic of workers and product more than to defend against attack.
The Gorge. There is a deep gorge here at the edge of a cliff-face. This massive gorge is why the mine exists - the cliff-face used to have visible crystal deposits on it, so the Duan'Kan built the bridge and mine to access the cliff face and then to dig into the face to follow the crystal veins. The bridge is a flat bridge, to allow for easier transport of crystal out of the mine.
Towers. There are two defensive protrusions that jut out over the gorge. They exist for archers and kineticists to use to watch approaching traffic in order to defend the mines proper.
Then there are a bunch of rooms - up to the GM, but likely including a small barracks and kitchen environment for the guards who worked here, but not the miners. They would have been fed at the mining camps some distance away.
The Shaft In the back of the rooms is the elevator shaft with two elevator platforms. To the East of the shaft is the room with the machinery to raise and lower the platforms to the mines below.
Wow, looking at my maps from 2005, I realize I've let my skills rust pretty badly. I have to really work on these to bring them up to par with the stuff I was doing then.