2015 Event American rock climbers Tommy Caldwell and Kevin Jorgeson become the first to successfully free-climb the Dawn Wall face of El Capitan in Yosemite National Park, a climb of 3,000 feet; the men started the climb on December 27th, 2014 2014 Event Two security threats to Apple operating systems have been identified; the 'rootpipe' malware impacts OS X, including the new Yosemite version, while 'wirelurker' currently affects iOS users who have downloaded pirated apps 2013 Event The Rim Fire at Yosemite National Park, which burned over 371 square miles and is now 80% contained, is being blamed on a hunter's illegal campfire 2013 Event Yosemite National Park continues to be engulfed by flames as the Rim wildfire has grown to 281 square miles 2013 Event The Rim wildfire burning in Yosemite National Park has consumed 225 square miles of forest, and is only 7 percent contained 2013 Event A wildfire near Yosemite National Park burns over 25 square miles, forcing residents of the Pine Lake community to evacuate 2012 Event U.S. National Park officials notify 3,100 recent visitors of an outbreak of Hantavirus sourced to tent cabins in Yosemite National Park 1896 Event Yosemite becomes a National Park 1890 Event Yosemite National Park forms 1890 Event Congress establishes Yosemite National Park 1851 Event Yosemite Valley discovered in California
