Page Type Page Type: Mountain/Rock
Location Lat/Lon: 33.74409°N / 115.73972°W
Additional Information GPX File: Download GPX » View Route on Map
Additional Information County: Riverside
Additional Information Elevation: 5350 ft / 1631 m
Sign the Climber's Log


Eagle Mountain
Eagle Mountain From Lost Palms Oasis Trail

Eagle Mountain is the highest peak in the Eagle Mountains, a range of the northern Colorado Desert in south central Joshua Tree National Park.  It's exactly 4 miles east of the Cottonwood Visitor Center. Despite its proximity to the visitor center and campground, Eagle Mountain is not often climbed. Rugged desert features deter most hikers from venturing any further than Mastadon Peak, a nearby pile of rocks with an official trail and parking area. The Lost Palms Oasis Trail can be used to put you a little closer to Eagle Mountain before you begin your off-trail desert excursion.

Giant Adamellite Boulder

Aside from the view, Eagle Mountain has two main draws which attract peakbaggers from distant places who are working peak lists. The first draw is the Sierra Club’s Desert Peak Section list.  Eagle is one of only 3 peaks inside the national park which are included on that list, the other two being Spectre Peak and Pinto Mountain. The second draw is the CA P2k list (peaks with 2000 feet or more of prominence). If you’ve never heard of listbagging or the prominence religion, don’t worry yourself about it because it’s obscure, nerdy and leads to a lot of bizarre behavior.

The Canyon
The West Canyon

Back to the peak. An ascent of Eagle Mountain will require crossing 3+ miles of open desert and navigation of sandy washes, rocky ditches, and piles of quartz monzonite boulders also known as adamellite. The standard route ascends the west facing draw to gain the upper plateau. Careful route finding is necessary on the upper mountain where rocky obstacles can present serious challenges.

Summit View East
Summit View East

Summit View Southwest
Summit View Southwest

Plant life in this part of Joshua Tree is somewhat dense. Some of the species present here are yucca, mesquite, creosote, palo verde, ironwood, ocotillo, cholla and other cacti. Many of these plants have sharp natural defenses meant to deter animal contact. You will know immediately if that happens to you. Exercise care and give sharp plants the space they require.

Standard West Route

You have two options. The first is to park at the Lost Palms Oasis trail and take the trail as far as Mastadon Peak before venturing off to the northeast. This will put you closer to Eagle Mountain, but it is a less direct route overall. The second option is to park in the Cottonwood Campground and hike east by northeast to reach the mouth of the canyon. Mastodon makes for a good add-on because it is a fun scramble and a good viewpoint, but in itself is not really much of a peak.  These routes gain 2350 feet and are either 10.5 or 11 miles round-trip depending on your choice.

Eagle Mountain Approach
Eagle Mountain Approach

Regardless of where you start, aim for the big canyon on the west face of the peak. You will likely pass some very interesting rock features along the way, but nothing difficult. Enter the canyon and scramble around and over some rocks and bushes following the main wash up.

Rock Mounds
Interesting Rock Mounds

The main wash splits at 4300 feet. Most parties take the right fork, but I explored both options and found that either one will work. Continue up to the top of the draw at edge of the upper plateau and be careful of loose dirt and rocks near the top.

Entering The Canyon
Entering The Canyon

There are some initial hills and then a valley which separate the west canyon from the highest peak. Traverse east by southeast along the south side of these small hills or go over the top of them and then traverse around the south side of Point 5040+. There might be cairns or “ducks” present to mark the route.

Upper Valley
The Upper Valley And Summit Beyond

Once past (southeast of) Point 5040+, turn left (northeast) and descend through a pass 100 yards into the small valley. Then turn southeast again and ascend to a small pass located between a large group of rocks on the left and a rock pinnacle on the right.

The High Valley
The Pass Left Of The Rock Pinnacle

From this little pass, navigate around and through some more rock formations and then you will come to the last level area before the upper west slope of the peak. Ascend this final slope to reach the summit. Cholla cactus is plentiful around the summit area.

Eagle Summit Ahead
Final Slope To Summit

Views to the west of the Cottonwood, San Bernardino, and San Jacinto ranges are very good, while to the north, the Pinto Mountains, and the Hexie Mountains view prevails. South across the Chuckwalla Valley, the Orocopia Mountains are visibly shorter and to the east, the Chuckwalla Mountains and the remainder of the Eagle Mountains spread out below as well as other distant ranges.

Route Maps

The above map is a downloadable GPX file for use with GPS (link at top of page), while the one below can be printed full-page for in the field use.

Eagle Route Map
Route Map

NPS Mastadon Peak and Lost Palms trail map

Driving Directions

Whether coming from the east or west, take Interstate 10 to exit 168 and turn north on Cottonwood Springs Road. Continue north for 7 miles to the Cottonwood Oasis Road and turn right. Follow this road 0.7 miles to the turnoff for the campground or 1.2 miles to the end where the Mastadon access loop trail begins.

Red Tape

Eagle Summit Benchmark
Eagle Summit Benchmark

The Joshua Tree National Park entrance fee is $15 - Annual, Senior, and Access Passes are accepted.

Dogs are not allowed to hike inside the park.

External Links / Trip Reports

Joshua Tree National Park
6554 Park Blvd., Joshua Tree, CA 92252

Cottonwood Visitor Center
Pinto Basin Rd, Twentynine Palms, CA 92277



Parents refers to a larger category under which an object falls. For example, theAconcagua mountain page has the 'Aconcagua Group' and the 'Seven Summits' asparents and is a parent itself to many routes, photos, and Trip Reports.

Joshua Tree National ParkMountains & Rocks
California Desert PeaksMountains & Rocks