Joshua Tree

Verified Timeline

Lore & Background

The earliest known residents of the land in and around what later became Joshua Tree National Park were the people of the Pinto Culture, who lived and hunted here between 8000 and 4000 BCE. Their stone tools and spear points, discovered in the Pinto Basin in the 1930s, suggest that they hunted game and gathered seasonal plants, but little else is known about them. Later residents included the Serrano, the Cahuilla, and the Chemehuevi peoples. All three lived in small villages in or near water, particularly the Oasis of Mara in what non-aboriginals later called Twentynine Palms. A fourth group, the Mojaves, used the local resources as they traveled along trails between the Colorado River and the Pacific coast. In the 21st century, small numbers of all four peoples live in the region near the park; the Twentynine Palms Band of Mission Indians, descendants of the Chemehuevi, own a reservation in Twentynine Palms. In 1772, a group of Spaniards led by Pedro Fages made the first European sightings of Joshua trees while pursuing native converts to Christianity who had run away from a mission in San Diego. By 1823, the year Mexico achieved independence from Spain, a Mexican expedition from Los Angeles, in what was then Alta California, is thought to have explored as far east as the Eagle Mountains in what later became the park. Three years later, Jedediah Smith led a group of American fur trappers and explorers along the nearby Mojave Trail, and others soon followed.

Reader's Guide

Joshua Tree National Park is significant for preserving the unique ecosystems of the Mojave and Colorado Deserts, including the endemic Joshua tree. The park's history includes early Native American habitation, Spanish exploration, and later American settlement. Mining and cattle grazing occurred in the area from the 1860s through the 1940s. Notable mines include the Lost Horse Mine, which produced gold and silver worth about $5 million in today's currency. Johnny Lang and others, the original owners, installed a two-stamp mill to process ore, and the next owner, J.D. Ryan, replaced it with a 10-stamp steam-powered mill. The Desert Queen Mine on Keys' Desert Queen Ranch was another productive gold mine. In the early 1930s, Keys bought a gasoline-powered two-stamp mill, the Wall Street Mill, and moved it to his ranch to process ore. The ranch and mill were added to the NRHP in 1975 and the mine in 1976. The park was protected through the efforts of Minerva Hoyt and others, leading to its designation as a national monument in 1936 and later as a national park in 1994. The park faces environmental challenges, including climate change threatening Joshua tree habitat—it is forecasted that by 2099, under the high emission scenario, the park will increase in temperature by 8 °F, making most of the park unsuitable for Joshua tree growth. The desert tortoise population has decreased due to habitat loss and climate change. Bird species have declined 43% according to studies conducted in 1908–1968 and 2013–2016. The Mojave Desert Land Trust has conserved 10,290 acres within the park and has sold 25,801 acres of acquired private property to the National Park Service.

Did You Know?

• The park is slightly larger than the state of Rhode Island, encompassing 795,156 acres.
• The earliest known residents, the Pinto Culture, lived and hunted here between 8000 and 4000 BCE.
• The Lost Horse Mine produced gold and silver worth about $5 million in today's currency.
• Bird species in the park have declined 43% according to studies conducted in 1908–1968 and 2013–2016.
• The Mojave Desert Land Trust has sold 25,801 acres of acquired private property to the National Park Service.

Common Misconceptions (Editorial)

Some people assume the park has always been a national park, but Joshua Tree was originally declared a national monument in 1936 and was redesignated as a national park in 1994. Others mistakenly think the park contains only one desert, when in fact it encompasses portions of two distinct deserts: the higher Mojave Desert and the lower-lying Colorado Desert. A common belief is that the Joshua tree is unique to the park, but the plant is endemic to the park and surrounding areas, not exclusively found within its boundaries.

Why It Matters (Editorial)

Joshua Tree National Park endures as a singular landscape where two desert ecosystems converge, offering a rare glimpse into the resilience of life in extreme conditions. Its protected wilderness—encompassing an area larger than Rhode Island—preserves not only iconic Joshua trees but also a deep human history stretching back thousands of years, from the Pinto Culture to the Cahuilla and Serrano peoples. In an era of accelerating environmental change, the park serves as both a refuge and a vital laboratory for understanding desert biodiversity and the impacts of climate shifts.