Sabalan ridge of Sabalan. Sabalan Sabalan (Persian: سبلان ), or Savalan (Azerbaijani: Savalan, ساوالان ) is an inactive stratovolcano in the Alborz mountain range and Ardabil Province of northwestern Iran. At in elevation, it is the third highest mountain in Iran. It has a permanent crater lake formed at its summit. On one of its slopes around in elevation there are large rock formations of eroded volcanic outcrops which resemble animals, birds, and insects. Located in the extreme northwest of Iran, Sabalan is the country's third highest peak after Damavand and Alam-Kuh. It is also higher than Mont Blanc in the
Tweed Volcano since the volcano was active, erosion has been extensive, forming a large erosion caldera around the volcanic plug of Mount Warning. Its erosion caldera is the largest in the Southern Hemisphere. Lavas from the Tweed Volcano are recognised as part of the Lamington Volcanics. The volcanic stratigraphy of the Tweed Volcano is similar to many other hotspot volcanoes around the world. Eruptions of tholeiitic and some calc-alkaline basalts are the oldest recognised units derived from the volcano. These are named the Lismore Basalt and Beechmont Basalt in New South Wales and Queensland respectively. There are numerous flows recorded which may