"Zwergen Fantasie" (German for "Dwarf Fantasy") generally refers to the fantasy genre focused on dwarves, often featuring their strongholds, unique cultures, and their roles in larger fantasy narratives. It's a common theme in fantasy fiction, drawing inspiration from the dwarf lore found in works like "The Hobbit" and "The Lord of the Rings". While the term itself might not be a specific subgenre, it broadly describes stories that prominently feature dwarves and their world-building elements.