The Sonoran Desert is an arid region covering parts of the Southwestern United States in Arizona and California and of Northwestern Mexico. It is one of the largest and hottest deserts in North America, but it is also the most biologically diverse. This richness is due to its two rainy seasons—winter storms and summer monsoons—which allow for a wide variety of plant life. It is the only place in the world where the iconic Saguaro cactus grows in the wild. These 'giants' of the desert can live for over 150 years and grow up to 15 meters tall. The Sonoran also contains the Salton Sea, a saline lake in California created by an engineering accident in 1905. The desert is a site of significant cultural history, inhabited for thousands of years by Indigenous groups like the Tohono O'odham, who traditionally harvest Saguaro fruit.