Love the "Monument". Hard to get used to saying National Park. Retired from the Marine Corps in '91 from Twentynine Palms Marine Corps Base. Owned a house on Pinon and had JTNP as our backyard. With a telescope in the backyard we could see the Mountain Sheep on the cliffs. Make sure you visit the Visitor's Center and the Oasis of Mara. Great places for shots all day and night. Loved the springs in the park with all the wild flowers down the valley heading to Indio and I-10. Do miss meeting folks up there in the summer evenings for BBQ's and kids running everywhere climbing the rocks up at Big Rocks. Wonderful vistas of the Morongo and Cachella Valley's. Sunrises and Sunsets are wonderful.
Have fun and enjoy. Living out there a total of 10 1/2 years and still was not able to see the whole "Monument".