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
Blackmagic URSA Mini Pro, the most recent variant of the URSA camera, was released on March 2, 2017. Compared to the URSA Mini, it adds an internal neutral density wheel, shoulder-accessible controls, and a secondary 4" touchscreen, and ships only in a 4.6K specification. Its most unique feature is a user-interchangeable lens mount. The camera ships with an EF mount, and at release time, PL and B4 mount modules were available for purchase. The Blackmagic URSA Broadcast, the most recent variant of the URSA camera, was released on February 1, 2018. While not an URSA "Mini", the Broadcast uses the same platform