It’s situated underneath a private house in the village of Xaghra and the tour is guided by the owner herself. The Grotto was discovered by her grandfather Mr. Anthony Xerri in 1923 when he was digging a well to find water. For a nice cool down during the summer months as the constant temperature in Xerri’s Grotto is 19 degrees. But most importantly for some impressive stalagmites and stalactites that took thousands of years to form, especially considering the lack of water on the island. You will find yourself approximately 7 meters below the surface and the guided pathway is about 17 metres long and the tour takes about 15 minutes. The entrance is €2,50.