⛰️ Jólnir

Jólnir was formerly a volcanic island south of Iceland. It was a former vent of Surtsey, along with Syrtlingur and Surtla. It emerged from the ocean as a result of active plate tectonics between December 1965 and July 1966. Oceanic erosion cyclically wore down the new lava as it formed, and the island sank below the surface several times.