A great hike for the entire family. I would recommend it to anyone looking for an easy hike with unique scenery (old growth trees) within a couple hours of Seattle. We selected it since it was raining in other old growth forest areas around Seattle (e.g. Mount Rainier). Since it is east of the Cascades, we had better weather. Initially, the trail goes along Cooper River with nice views up and down the riverbed. It then crosses several dried-up tributaries that feed into the river. It was a very enjoyable walk with cool temperatures, dense plant life, varying ecosystems and endless numbers of old growth trees. Plus, we had never seen so many different mushrooms – white, yellow, brown, orange and purple! You pass several areas that are prime for individual and group campsites. Once you get close to Pete Lake, you turn the corner and see two enormous old growth trees. They were truly spectacular and really stood out. Great photo opportunity. Pete Lake was a perfect ending spot with a large campsite area and places to eat lunch down by the water. Spectacular views of the distant mountains leading up to the peaks of the Alpine Lakes Wilderness. Very peaceful and no one around. Oh, and you pass through Roslyn to get to the trailhead. It is a pretty cool tiny old town to visit for a quick beer, burger or donut!