These are the crags you see south of Interstate 10 as you drive east towards Phoenix. They are just past the Chiriaco Summit area, maybe 1/2 hour east of Indio and not far from the Cottonwood Entrance to Joshua Tree National Park. They aren't actually in the Park but I placed them there as it's the closest location.
Drive east on I-10 to the next two exits past Chiriaco Summit. These exits are Hayfield, and then Eagle Mountain. Both have climbing and the crags are visible as you look south from Interstate 10.
Mountain Project's determination of some of the classic, most popular, highest rated routes for Interstate 10 Crags:
Is this area actually past Chiriacco Summit? Awhile back we attempted to climb at Chiriacco Summit based on the information we had in the JT guidebook, but we were disappointed that the area is off limits because of some local public agency (no trespassing signs were everywhere). So we were curious if these climbs are actually outside the park.