Audio Journeys explore Yosemite National Park, California via a tram. Spring is a great time to visit Yosemite; when birds and wildflowers flowers abound. Our tour guide tells us about rock climbers, Miwok natives, the swift flowing Merced River and other superlatives of Yosemite. One of the oldest parks in the nation, Yosemite was make a national park in 1890, and designated a World Heritate Site in 1984.