Zzyzx /ˈzaɪzɨks/, formerly Camp Soda and Soda Springs, is an unincorporated community in San Bernardino County, California, United States, within the boundaries of Mojave National Preserve. 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 4.5-mile-long (7.2 km), part paved and part dirt, rural collector road in the Mojave Desert. It runs from Interstate 15 generally south to the Zzyzx settlement.
The settlement is in area codes 442 and 760 and ZIP code 92309. The nearest town is Baker, California, 7 miles (11 km) north on I-15. Las Vegas, Nevada, is the nearest major city, about 100 miles (160 km) northeast.
Soda Springs, a natural spring, has long seen human activity. The area was a prehistoric quarry site, and projectile points and rock art can be found in the area. The Mojave Road ran past the spring, as did the Tonopah and Tidewater Railroad. Remnants of a wagon road stop and railroad artifacts are readily seen. Evaporative salt mining and mill sites can be found here as well.
Tonopah and Tidewater Railroad railbed crossing Soda Lake at Zzyzx
The made-up name Zzyzx was given to the area in 1944 by Curtis Howe Springer, 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 12,000 acres (49 km2) 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.
Since 1976, the Bureau of Land Management has allowed California State University to manage the land in and around Zzyzx. A consortium of CSU campuses use it as their Desert Studies Center.