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A YouTube promotional thumbnail for an underwater world diorama build, showing a detailed model scene with ruins and structures on a white base, overlaid with text reading 'Creating an Underwater World - The Sunken Citadel', a large red YouTube play button, and a visible person in the upper right.

Sunken Citadel

Discover a world beneath the surface.

Take a tour of the Sunken Citadel in this YouTube video and see an incredible underwater city brought to life with highly detailed 3D printable terrain. From sprawling buildings to immersive layouts, this tabletop world demonstrates what's possible when modular terrain is combined into one spectacular display.

Designed for FDM 3D printers, the Sunken Citadel offers endless opportunities for underwater adventures, roleplaying campaigns and miniature wargaming.