Explanation:

Mt. Stromboli is often referred to as the "Lighthouse of the Mediterranean" because of its frequent and visible eruptions. This active volcano is located on the island of Stromboli, which is a part of the Aeolian Islands in Italy. The continuous and regular eruptions of this volcano have been observed for over 2,000 years, making it one of the most active volcanoes on Earth. Because of its eruptions' regularity and visibility from the sea, sailors have historically used it as a natural lighthouse, thus leading to its nickname.