Images of Mojave Wilderness: at 7,929 feet, Clark Mountain is the highest point in Mojave National Preserve. NPS Photo. The United States was the first country in the world to define and designate wilderness areas through law: 'The tendency nowadays to wander in wilderness is delightful to see. Thousands of tired, over-civilized people are beginning to find out that … wildness is a necessity; … parks and reservations are useful not only as fountains of timber and irrigating rivers, but fountains of life.' Wilderness - Mojave National Preserve (U.S. National Park Service)