From publisher blurb:
The Santum of Hrathgor is a well-known holy warrior training site of Mannab near Claf-Den. Many come here to learn from the Black Badger, an elite fighter of the Lugenshod Clan. While off on a survival training mission in the Tigradad-Run Mountains with a group of trainees, the sanctum comes under attack. A crazed ‘merishuol’, a relentless predator once controlled by elven mage hunters and now spends its time looking for worthy prey, has found its next challenge.
The Fallen Sanctum of Hrathgor is a Q-Crawl, or Quick-Crawl, that can be run for a group of four to six players with 5th-level characters. This crawl would be considered a ‘medium’ to ‘hard’ encounter.