This 111-acre site protects a sphagnum moss bog which is now extremely rare in the Puget Trough.  The site also protects mountain bladderwort and few- flowered sedge, both Sensitive plant species, and Beller's ground beetle, a Sensitive animal species.  A small strip of natural old growth forest with western hemlock and western redcedar remains along one edge of the bog.  (King County)