Stromboli is famously known as the “Lighthouse of the Mediterranean.” This nickname comes from its frequent, glowing eruptions that have been visible from great distances at sea for centuries. Sailors in ancient times used the red glow of its summit as a natural navigation aid during the night. ANSWER: (A) Stromboli
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The volcano’s constant “Strombolian” activity produces small explosions of lava every 20 to 30 minutes. Because these eruptions are bright and occur at the summit of a mountain rising directly from the sea, they create a persistent light source. Unlike many volcanoes that stay quiet for decades, Stromboli’s reliability is unique. This nickname highlights the historical intersection of geology and maritime history, where a dangerous natural phenomenon was utilized as a helpful guide for Mediterranean trade and travel.