Boundary Camp is a first-come-first-serve camping area located in the Northern Cascades of Washington. With stunning views of the mountains and the Skagit River, it's perfect for outdoor enthusiasts. There are 10 campsites available, with each featuring a picnic table and fire ring. The area offers hiking and fishing opportunities, and there are several nearby attractions, such as the North Cascades National Park and Diablo Lake. The best time to visit is from June to September, with average temperatures ranging from the mid-60s to low 70s. The campground also provides restrooms and water, but no other amenities are available.