This 475-acre park is located on WA504 about six miles east of I-5 and Castle Rock, WA. Its elevation is about 500 feet and it is open year-around. Unlike many other Washington state parks that have mowed lawns with underground sprinklers, closely-spaced sites and zero privacy, this park actually has campsites in the woods. The forest is largely Doug Fir and Oak with a lot of underbrush. Sites are large and well-spaced. Overall privacy is fairly good but we could see into adjoining sites on both sides and across the road. Even with several other campers nearby the place was pretty quiet. Three loops contain a total of 102 sites. There is one loop for big RVs (16 sites with hookups) and two loops for tents or trailers. Seventeen of the 54 tent/trailer sites in the A (North) Loop have hookups (since there are 33 hookup sites overall). None of the 22 sites in the B (South) Loop have hookups. There is a mixture of back-in and pull-through sites in the North while the South is almost all back-in. Pads are of various lengths so not all can handle a trailer/TV combo. The longest is 50 feet. Some parts of the roads are paved but there is a lot of dirt/gravel combo. The pads are also unpaved. Ours was not level -- I had to lift one wheel about four inches. There are also five "yurt cabins," a group area and a day use area. The campground has flush toilets (cleaned daily) with showers (need tokens), trash collection and a dump station. The gatehouse sells wood and ice. The park takes reservations. Unreserved sites are FCFS night by night. We had Site 73 in the South loop -- no hookups. Since the area is hilly our site, like many, had two levels with the parking pad higher and the rest of the site lower down a hill. Ours had a steep 4-5 foot drop and I really disliked having to climb up and down every time I wanted to go to the trailer or truck for something. What I disliked the most, however, was the loud and constant highway noise. It started early in the morning and ran late into the night. Highway 504 is only about 100 yards from the loop. All sites have a table and fire ring. The cost is $20 per night for a dry site -- too much IMO. Electric and water sites are $39 per night! Check in time is 2:30 PM, while check out time is 1:00 PM. A site can be occupied earlier if it is vacant. We arrived about 1:00 PM and occupied ours right away. Quiet time is 10:00 PM- 6:30 AM. Generators are permitted 8:00 AM - 9:00 PM. The maximum stay is ten consecutive days in summer. The park has a mile of beach on Silver Lake and seven miles of hiking/bicycle trails. There are also children's play areas, volleyball and horseshoe areas. There is a Visitor Center but they charge $5 admission. The Visitor Centers offered by the feds at Johnston Ridge and Weyerhaeuser (along WA504) are free. The Johnston Ridge Observatory and Visitor Center in Mt. St. Helens National Volcanic Monument is about 50 miles east on WA504. The trip brings you to 4,000 feet of elevation and you get a spectacular, close-up view of the mountain. There are great views of the Toutle River Valley along the road too. I liked this park in some ways but the high cost and horrible highway noise were overwhelmingly negative. I probably won't go back. Here is our campsite seen from the trailer parking pad.