Our last hike in Zion NP this trip was the Lower Pine Creek Waterfall trail. This is not well advertised but can be found as one of the top trails in AllTrails app or .com. The hike is short but requires crossing Lower Pine Creek several times. This means scrambling over boulders, scaling some rock slopes and creek shallows. This late in the season, the creek level was low but the waterfall still had decent flow and a good size pool.
Although a short hike, because of the scrambling and scaling of rock faces to get to the waterfall. This hike is classified as moderate on AllTrails. We found it enjoyable and different, requiring you to find your own route in some spots. Since it is lesser known, there were only a few other hikers on the trail and we had the waterfall to ourselves our entire visit. From our experience, it seems like most of the trails get busier by late morning to early afternoon so hike early to avoid traffic.