Unusual Volcanic Craters

Diamond Head is a volcanic tuff cone on the Hawaiian island of Oʻahu.

Eric Tessmer [CC BY 3.0], via Wikimedia Commons

Kelimutu is a volcano, close to the small town of Moni in central Flores island in Indonesia. The mountain has three volcanic crater lakes that differ in color.

By Neil, WWW.NEILSRTW.BLOGSPOT.COM Malaysia – Kelimutu, CC BY 2.0, Link

By Rosino – [1], CC BY-SA 2.0, Link

Santa Margarida Volcano in Spain. The hermitage of Santa Margarida, after which the volcano was named, is inside the crater of the volcano. The building was destroyed in 1428 during the 1428 Catalonia earthquake and rebuilt in 1865.

By Carquinyol from Badalona, Catalunya – Volcà de Santa Margarida, CC BY-SA 2.0, Link

Koko Crater, Hawaii, is a large tuff cone that visually dominates the area. Within the crater are horse stables and the Koko Crater Botanical Garden specializing in cacti and succulents.

By No machine-readable author provided. Mbz1 assumed (based on copyright claims). – No machine-readable source provided. Own work assumed (based on copyright claims)., CC BY-SA 3.0, Link

Molokini, Hawaii, is a crescent-shaped, partially submerged volcanic crater which forms a small, uninhabited islet. The islet is a popular tourist destination for scuba diving, snuba, and snorkeling. Its crescent shape protects divers from waves and the channel’s powerful currents.

By Bossfrog – Own work, CC BY-SA 4.0, Link

Seongsan Ilchulbong, South Korea, also called ‘Sunrise Peak’, is a tuff cone formed by eruptions upon a shallow seabed about 5 thousand years ago. Situated on the eastern seaboard of Jeju Island and said to resemble a gigantic ancient castle, this tuff cone is 182 meters high, has a preserved bowl-like crater and also displays diverse inner structures resulting from the sea cliff.

By Korea.net / Korean Culture and Information Service (Photographer name), CC BY-SA 2.0, Link

Aogashima is a volcanic Japanese island in the Philippine Sea. The island is surrounded by very steep rugged cliffs of layered volcanic deposits. The southern coast also rises to a sharp ridge forming one edge of a caldera.