In this Aug. 27, 2009 photo, giant sequoias dwarf a cabin in the upper Mariposa Grove at Yosemite National Park, Calif.  Yosemite National Park is celebrating the 150th anniversary of President Abraham Lincoln's signing of the Yosemite Grant Act, Monday, June 30, 2014, which protected Yosemite Valley and Mariposa Grove. The event will include a groundbreaking ceremony for a project to restore Mariposa Grove, which consists of 500 mature giant sequoia trees that are among the oldest living organisms in the world. (AP Photo/Mark A. Duncan)
In this Aug. 27, 2009 photo, giant sequoias dwarf a cabin in the upper Mariposa Grove at Yosemite National Park, Calif. Yosemite National Park is celebrating the 150th anniversary of President Abraham Lincoln's signing of the Yosemite Grant Act, Monday, June 30, 2014, which protected Yosemite Valley and Mariposa Grove. The event will include a groundbreaking ceremony for a project to restore Mariposa Grove, which consists of 500 mature giant sequoia trees that are among the oldest living organisms in the world. (AP Photo/Mark A. Duncan) AP
In this Aug. 27, 2009 photo, giant sequoias dwarf a cabin in the upper Mariposa Grove at Yosemite National Park, Calif. Yosemite National Park is celebrating the 150th anniversary of President Abraham Lincoln's signing of the Yosemite Grant Act, Monday, June 30, 2014, which protected Yosemite Valley and Mariposa Grove. The event will include a groundbreaking ceremony for a project to restore Mariposa Grove, which consists of 500 mature giant sequoia trees that are among the oldest living organisms in the world. (AP Photo/Mark A. Duncan) AP

Hundreds gather to celebrate Yosemite's 150th anniversary

June 30, 2014 11:59 AM

UPDATED June 30, 2014 12:11 PM