Originally an Eagle Scout project, the Moss Lake Nature Trail is adjacent to Camp Sheppard, which is managed by Boy Scouts of America. But the trail is on Forest Service land. It shares a parking lot and trailhead with the Snoquera Falls trail, and requires the usual Northwest Forest Pass.
From the parking lot, the approach to the loop is just 400 feet. When you see the scout amphitheater, go right on the (currently) unmarked trail. The counter-clockwise loop has 21 interpretive stations over its 0.7-mile length. Moss Lake Interpretive Trail guides are available at the Forest Service Ranger Station, at 450 Roosevelt Avenue East in Enumclaw.
For the full effect, walk along the path, referring to the interpretive guide. Become aware of the different trees, shrubs, and berries. Witness fire damage. Read detailed descriptions of the plant life around you.
But where is the lake? Spring runoff can encroach upon the trail, but Moss Lake is seldom more than a swampy pond. And it dries up completely in summer.
Note: As of this writeup, many of the interpretive signposts have rotted at the base, and are just leaning against a tree, not in their correct locations. The interpretive guide is in need of updating too, but is still informative.
In 2023, WTA completed repairs on a section of puncheon, returning the entire loop to being wheelchair-friendly. Work parties also installed a raised walkway where flooding has occurred in the past. Check it out!