Answer: The Mojave Desert and the Colorado Desert.
The Joshua Tree National Park is a national park in California, United States. It is a desert area located at the intersection of two large deserts: the Mojave (at the western part) and the Colorado (at the eastern and southern part).
The name of this national park comes from a species of cactus, found almost exclusively in this area, called the Joshua tree.
It should be noted that in these two deserts a great variety of species of plants, reptiles, mammals and birds coexist. In addition to being an area where important archaeological sites are protected.
