Royal Sites of Ireland Rathcroghan

The Cave of the Cats, near Rathcroghan, is a Sídh Terrain dating between the 5th and 10th century. Extending about 50 meters underground, it connects to a natural limestone cave. Uniquely, its entrance deliberately blocks sunlight, aligning with its medieval reputation as one of Ireland’s darkest places, emphasizing sensory deprivation in its design.