This is a wooden door for your dungeon. There is a print in place version with working hinges and an opened and closed version if you don't want to mess with print in place hinges. The two split versions can be printed flat and glue together.
I have had varying success with the print in place hinges, they seem to be filament dependent (i.e. I use the same settings for all my PLA). But I tried it with a few different brands/types of PLA and adjusted the gap to print with all of them. Just take your time loosening them, a gentle wiggle back and forth 5-10 times is usually enough. However, your mileage may vary. Let me know how yours turn out if you print this version.
Inspired by Dungeon Door - Open and Closed by bbzed and Dungeon Game Working Door by dazzlesp.
Update1 : Added some more options: Print in place hinge version with a separate arch to be assembled after print (maybe split the arch into two pieces and glue together or use supports) and a slide in door version to save filament (this way you don't have to print an extra frame for a closed door)
Update 2: Per LiquidAvatars's request I added a door without an arch and a base to hold it together. LiquidAvatar had the cool idea to put a tile under the door. The included base can be flipped and a tile can be insert underneath it, use glue and provided pins to hold it together. You may want to use a brim on the pins.