Information about the Union Bay Natural Area.
Boardwalk to minimize human impact along the Yesler Swamp Trail.
SR 520 bridge visible in the distance from the Yesler Swamp Trail.
Viewpoints on the boardwalk.
Union Bay Natural Area Centre for Horticulture.
Union Bay Natural Area Centre for Horticulture.
Union Bay Natural Area Centre for Horticulture.
Union Bay Natural Area Centre for Horticulture.