Gardner Pinnacles
Two barren rock outcrops surrounded by a reef in the Northwestern Hawaiian Islands / From Wikipedia, the free encyclopedia
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The Gardner Pinnacles (Hawaiian: Pūhāhonu) are two barren rock outcrops surrounded by a reef and located in the Northwestern Hawaiian Islands.
The Pūhāhonu volcano responsible for the pinnacles is 511 nautical miles (946 km; 588 mi) northwest of Honolulu and 108 miles (94 nmi; 174 km) from French Frigate Shoals. The total area of the two small islets, remnants of an ancient shield volcano, the world's largest, is 5.939 acres (24,030 m2).[1] The highest peak is 170 feet (52 meters).[2][lower-alpha 1] The surrounding reef has an area in excess of 1,904 square kilometres (470,000 acres; 735 sq mi).[3]
The Gardner Pinnacles were discovered and named in 1820 by the whaling ship Maro.[4] The island may be the last remnant of one of the largest volcanoes on Earth.[5] It holds the record for the largest and hottest shield volcano.[2][lower-alpha 2]