Even before the California Gold Rush of 1849, prospectors were finding gold in Southern California. As the rewards from the mines in the Sierras began to wither, miners headed toward the deserts, where hot summers, scarce water, limited wood sources, and the difficulty and high cost of transporting equipment and provisions created a challenging mining environment. But a few hardy adventurers endured, and about 300 mines were developed in what is now Joshua Tree National Park.

Few of these mines produced much, but one certainly did — the Lost Horse Mine