Under a towering canopy of the Mariposa Grove of Giant Sequoias, the National Park Service, Yosemite Conservancy and public officials today celebrated the 150th Anniversary of the Yosemite Grant Act, the legislation signed by President Abraham Lincoln to preserve Yosemite Valley and the Mariposa Grove, by breaking ground on a landmark project to protect the ancient sequoia trees and the extraordinary experience they make possible. https://www.nps.gov/yose/learn/news/yosemite-anniversary-celebrated-with-groundbreaking-for-landmark-project-to-protect-the-mariposa-grove-of-giant-sequoias.htm