Lost Horse Mine was one of the few successful mining operations of the more than 300 mines in what is now Joshua Tree National Park. The mining rights were originally purchased by Johnny Lang for $1,000. Realizing for safety that he needed more people in such a remote location, Lang brought in three partners before they were ultimately bought out in 1895 by J.D. Ryan, a wealthy rancher from Montana. From 1894 to 1931 the mine produced more than 10,000 ounces of gold and 16,000 ounces of silver (worth approximately $5 million today).

According to legend, the day shift was producing significantly more than the night shift so Ryan hired a private investigator to figure out what was happening. Upon discovering that Lang was pocketing half the ore for himself, Ryan forced Lang to decide between selling out or going to jail. Ultimately Lang sold his share and moved his prospecting to a nearby canyon.

In 1905, miners hit a fault and lost the vein of ore forever. Over the next couple of decades the mine changed hands several times and went through long periods of inactivity before ultimately becoming a part of Joshua Tree National Monument in 1936.

Today, the Lost Horse Mine can be reached on the Lost Horse Mine Loop Trail as part of a four mile out and back hike with 550 feet of elevation or as part of a longer loop for those that want a longer hike. Fences have been placed around the mine for safety, do not try to cross the fence and enter the mine as the area is unstable. Historic structures may seem safe but can easily crumble under a person's weight. Do not be fooled by appearances! Lost Horse Mine is a unique place and an important part of Joshua Tree's history. Please protect this place and report graffiti and other vandalism to JOTR_Graffiti@nps.gov.