he walked there in 1861
Well, you see, he was a preservationist and helped save the park. From Wikipedia "John Muir":His activism helped to save the Yosemite Valley, Sequoia National Park and other wilderness areas. The...
He was an environmentalist.
John Muir (21 April 1838 - 24 December 1914), the Scottish-born American naturalist, author, and early advocate of preservation of U.S. wilderness
John Locke discovered your mother, and she"s his hoe.