We come out to Starkey all the time, for the hiking and for the on and off road biking. We came out here with a group and did some backcountry camping (just one night) at Primitive 1. The reservations can be made online through the Pasco Parks website. There are 3 primitive campsites scattered throughout the park, one and 3 are within about 3.2 miles from the corral trailhead, and 2 is about 5 miles out. The trails are well marked until you get to the 4 mile mark, then the signage is poor and you need to use maps or a GPS route. They have some incorrectly marked trails out there, and it is easy to get lost finding the last primitive site. Primitive 1 is a heavily shaded and flat site with plenty of room and privacy. There is a picnic bench and a carved out tree for sitting, as well as a fire pit. You have to bring in your own water or a filter system, since thanks to COVID the park stopped putting water along the paved trail, which you could hike out to in a pinch and use. Now your only sources are stagnant ponds if you need some. This park has a lot to offer, and is a great little spot.