Campbell Tree Grove Camping Area in Washington is a first-come-first-serve campground that offers 10 primitive campsites surrounded by towering old-growth trees. The campground is located near the Columbia River and offers stunning views of the surrounding mountains. Nearby activities include hiking, fishing, and bird watching. Camp amenities are limited to vault toilets, fire pits, and picnic tables. The best time of year to visit is from June to September, with average temperatures ranging from the mid-50s to mid-70s. This secluded and peaceful campground is perfect for those looking to disconnect and enjoy nature.