Zzyzx ( ), formerly Soda Springs, is an unincorporated community in San Bernardino County, California, within the boundaries of the Mojave National Preserve, managed by the National Park Service (NPS), an agency of the U.S. Department of Interior, as public land. It is the former site of the Zzyzx Mineral Springs and Health Spa and now the site of the Desert Studies Center. The site is also the location of Lake Tuendae, originally part of the spa, and now a refuge habitat of the endangered Mohave tui chub. Zzyzx Road is a , part paved and part dirt, rural collector road in the Mojave Desert. It runs from Interstate 15 generally south to the Zzyzx settlement. The nearest populated area is the small town of Baker, California, north on Interstate 15. Las Vegas, Nevada, is the nearest major city, about northeast. History Curtis Howe Springer made up the name Zzyzx and gave it to the area in 1944, claiming it to be the last word in the English language. He established the Zzyzx Mineral Springs and Health Spa in 1944 at the spot, which was federal land, after filing mining claims for surrounding the springs. He used the springs to bottle his water and provide drinks for travelers through the hot desert. Springer also imported animals from around the country to attract more families to visit his ranch. He used Zzyzx until 1974 when the land was reclaimed by the government. In 1976, the Bureau of Land Management and the California State University agreed to cooperatively manage the land in and around Zzyzx, and establish the CSU Desert Studies Center. In 1994, the United States Congress passed the California Desert Protection Act, establishing the Mojave National Preserve on the former BLM land, and further formalized the partnership between the National Park Service and the California State University Desert Studies Center. Lexicography The name appeared as "Zzyzx Springs" in Dmitri Borgmann's 1967 book Beyond Language. In 1977, Borgman noted his source as being "an old, undated map of San Bernardino County published by the Automobile Club of Southern California" and repeated his description of the settlement as being "a hydrologic feature and privately owned spa in San Bernardino County, California, about 8.5 miles south of Baker, on the western edge of Soda Dry Lake, off the abandoned right-of-way of the old Tonopah and Tidewater Railroad." After Borgmann's book, the 1973 Hammond