Here is an ice planet. Evidently I forgot which color scheme I used.

Hammer's Slammers is a good set of stories.

The map area, so far, off to the right from Level 3.

Yes, the smaller circular room is a trap. The treasure is real, from the previous adventurers.

Two rooms are connected to the outer ring via secret doors and secret passageways. Arrow slots allow them to fire into the smaller room.

Level 3, main area.

Level 3B

Note that the shadows on this level are gray, not black.

1) fog with a trench

2) store room with barrels and book shelves.

3) first room encountered on this map. 3 open pits, and an open pit with spikes. An iron maden blocks access to a secret door.

4) 2 chests, a huge green glowing skull, and a ghostly crate.

5) a ghostly bed

6) Alchemist table and 2 other tables.

7) a large tent. Something ,might or might not be in there.

8.) a theater stage, 8 chairs, and 2 barrels behind the curtain.

Area/level 3C left to map.

Okay, scale bars and compass added.

Level 01, the main level.

Level 2 down. Room 1 spiral stairs goes down to level 3, room 2.