• Sunrise at the Cholla Cactus Garden

    Joshua Tree

    National Park California

There are park alerts in effect.
show Alerts »
  • Cottonwood Trails Closed

    Trail access remains closed to Cottonwood Spring Oasis, Lost Palms Oasis, and Mastodon Peak. More »

  • Pinto Basin Road Under Construction; Expect 30+ Minute Travel Delays

    Visitors should expect 30+ minute waits when heading north and sound bound on the Pinto Basin Road. Due to construction activity around Cottonwood Visitor Center, additional waits of 30 minutes may be in place when leaving the visitor center parking lot. More »

  • Deteriorating conditions of Black Rock Canyon Road

    The road leading to Black Rock campground has deep potholes, is deeply rutted, and can be difficult to negotiate, especially in large vehicles. Please drive with caution.


Park biologists conduct ongoing research on desert tortoise populations.
Park biologist Kristen Lalumiere refits a radio transmitter on a desert tortoise (Gopherus agassizii).
NPS Photo

Joshua Tree National Park is facing a number of complex and challenging issues that threaten the integrity of its natural ecosystems, cultural resources, and visitor experiences. To meet their stewardship responsibilities, park managers need to better understand the following science issues.

  • Air pollution
  • Cultural resource identification and evaluation
  • Habitat fragmentation adjacent to the park
  • Invasive exotic species
  • Lack of baseline data about park natural resources
  • Rare species conservation
  • Recreation impacts on visitor experiences and natural and cultural resources
  • Restoration of disturbed natural and cultural landscapes

In addition to the use of science as a means to improve park management, parks can be centers for broad scientific research and inquiry. The National Park Service facilitates research in parks when it can be done without impairing other park values.

Did You Know?

Fault map of the park

Joshua Tree is crisscrossed with hundreds of faults, and is a great place to see raw rocks and the effects of earthquakes. The famous San Andreas Fault bounds the south side of the park and can be observed from Keys View. More...