Ursa Minor (cave) Ursa Minor (cave) Ursa Minor Cave is part of Sequoia National Park, a naturally formed system of caves in California's Sierra Nevada. The cave was discovered in August 2006 by four cave explorers from the Cave Research Foundation who found a softball-sized hole on a cliff face in the mountains. After widening the hole to allow for human entry, the explorers discovered one of the most spectacular caves in the western United States. The cave has since been named "Ursa Minor," because of the large bear skeleton found in the cave. The cave was featured in the September 2007 issue
HMS Ursa (R22) refitted for service in the Far East and joined the British Pacific Fleet where she served until 1945. She then returned to the United Kingdom and paid off in 1946. During the War "Ursa" was adopted by the Borough of Hendon as part of "Warship Week". The plaque from this adoption is held by the National Museum of the Royal Navy in Portsmouth. After the Second World War "Ursa" went into reserve at Portsmouth, transferring to the Chatham reserve in 1952. During 1953 and 1954 "Ursa" was converted to a Type 15 anti-submarine frigate with the new pennant number F200.