Kilauea is often cited as the world’s most active volcano because of its persistent eruptive history. Located in Hawaii Volcanoes National Park, its activity is fueled by the Hawaiian hotspot. From 1983 to 2018, it experienced an uninterrupted eruption cycle along its East Rift Zone. Unlike explosive stratovolcanoes, Kilauea typically produces fluid lava flows that slowly build up the mountain’s shield-like shape. Its constant output provides invaluable data for volcanologists. Although it can occasionally be destructive to local property, its predictable behavior and accessible lava flows make it the most extensively studied volcano in human history.