This is a campground on one of the roads leading to Mt. Saint Helen's. It was a decent sized campground with RV spots, tent spots, group spots, and walk-in spots. It had a huge playground area as well as a day use site with covered shelters within the park. The visitor center was a short 1 mile walk from the campground that had an under road tunnel leading under the highway. From the visitor center here was an additional path through the marsh with views of Mt. Saint Helen's, or at least I think there are views the smoke was so thick we could not see the mountain. At night the campground had a great Junior Ranger program with a very enthusiastic park ranger that kept the almost 50 people/kids entertained. She was great at engaging all the kids and teaching them about the park, highly recommend this for anyone bringing kids. For being completely full the nights we were there it was pretty quiet with only the occasional noise coming from the nearby highway.
We stayed in the group site, spot 60/61. Since we booked the group site we were required to book both of the spots at the same time. It was the smallest group site I have ever seen. There was barely room for the 3 tents we set up and originally we would have had almost 6, which would not have fit in this spot. There were 2 large tables as well as 2 fire pits, however 1 fire pit was inches away from the bushes and would not have been good for people to sit around. Luckily the other fire pit was great and we were all able to sit around it. The bathrooms and water were close by.
There were other sites that were much bigger and would be able to accommodate larger groups. I would not waste my money on the group site if you need more then 4 tents, honestly 3 was a squeeze. It's a great campground for those that are spending multiple days in Mt. Saint Helen's since it was a very short drive away.