Many of us associate trees with our national park visits. Aspens and lodgepoles in Rocky Mountain, Grand Teton, and Yellowstone national parks, for instance, hemlocks in Great Smoky Mountains National Park, or cypress in Everglades National Park. In Yosemite National Park, the black oak is one of the iconic trees, one that strikes Steven Baumgardner, the park's videographer, in particular.