The Wailing Well

From itch.io:

Inspired by The Goblin Grinder and The Black Stump (go check them out!), this original adventure takes a group of unlucky wretches down an old well to find and kill the goblins that cursed them. The two-page, printer-friendly PDF includes a hand-drawn isometric map, descriptions for six areas, two memorable NPCs and a very unfortunate fate at the bottom of the well.

Using only creatures found in the official MÖRK BORG book, this adventure is intended as a short introduction to the game for new players and game masters.