The Wetlands Trail at Harrison Hills Park, PA, is a 2.3 mile loop hike and one of the best trails in the park.
Despite its name, this trail has more to offer than some of the shorter trails at Harrison Hills. Since the trail encompasses the central area of the park, you wind in and out of different types of forests and some open meadows as well. The trail ascends and descends hills from time to time, but for the most part it's an easy hike.
There's a vista point of the Allegheny River along the way that technically lies along the Scout's Trail, but hikers can walk over easily from the Wetland Trail to get a view.