La Grotta di Su Marmuri in Ulássai
„Even if this grotto is not the longest and the deepest of the area, anyway it is the most famous and the most important for its grandeur and its suggestive environment that fascinates tourists from all over the world.“ The cave in Ulássai is considered to be one of the most famous caves in Europe for its richness in concreations. The temperature inside remains constant at approximately 10 degrees celcius.