by Nick-SJM » Fri Sep 24, 2010 7:38 am
You are correct, there are two items you need to obtain.
First, you do need an "Adventure Pass" to park in certain Forest Service areas for recreational purposes. This includes Humber Park, where the Devil's Slide Trail begins. You can get a daily pass or buy an annual pass. It depends how much you will be parking to hike in the Forest Service area. These can be obtained at the Forest Service office in Idyllwild (unfortunately it opens at 8:00 am). These are also available at numerous stores in the mountain area. I'm not advising it, but I've heard people say that IF you get cited for not having the Adventure Pass, the only thing that happens is that you need to pay a fine equal to what the permit would have cost anyway.
The day use permit is obtained from the Forest Service. If you will be hiking in both the Forest Service and State Park area, you only need to get the day use permit from one of the agencies. The Devil's Slide trail has some unique rules. From Memorial Day to Labor Day, the number of permits is limited to hike UP the Devil's Slide Trail (going down, assuming you came in a different way is not limited). You must get a permit from the Forest Service office in Idyllwild. The rest of the year the number of permits is not limited, but you still need a day use permit.
The Devil's Slide Trail is a good initial trail to use to get to San Jacinto Peak. It's about 16 miles round trip.
Have fun.
Nick