Gardner Pinnacles

The Gardner Pinnacles are two barren rock outcrops surrounded by a reef and located in the Northwestern Hawaiian Islands at . The volcano is northwest of Honolulu and from French Frigate Shoals. The total area of the two small islets—remnants of an ancient volcano that is the world's largest shield volcano—is . The highest peak is . The surrounding reef has an area in excess of . The Gardner Pinnacles were discovered and named in 1820 by the whaling ship Maro. The island may be the last remnant of one of the largest volcanoes on Earth. It holds the record for the largest and hottest shield volcano. History The Gardner Pinnacles were first discovered on June 2, 1820, by the American whaler Maro, commanded by Captain Joseph Allen.