Yosemite National Park announces Yosemite Valley, Wawona Road, the Mariposa Grove of Giant Sequoias, the Merced Grove of Giant Sequoias, Hetch Hetchy, and other areas will remain closed to all visitors through Sunday, August 5, 2018 due to continued unhealthy smoke impacts and ongoing firefighting operations. The park will continue to assess conditions and reevaluate all closures on Sunday, August 5. https://www.nps.gov/yose/learn/news/yosemite-national-park-announces-yosemite-valley-and-other-areas-will-remain-closed-through-sunday-august-5-2018-due-to-continued-unhealthy-smoke-impacts-and-active-firefighting-operations.htm