Directions to Pinnacle Mountain State Park (all quarterly meetings): From Interstate 430 take the exit for Highway 10 (Cantrell Road) West. Follow Highway 10 to Highway 300 and turn right. Follow Highway 300 past the entrance to the day use area of the park and take the next right on Pinnacle Valley Road. Follow Pinnacle Valley Road for a couple of miles and the entrance for the ParkVisitor Center will be on your left. Watch for the sign on the right side of the road. Careful: the entrance sneaks up on you if you aren't watching. See map below.