Mossy Cave and the waterfall near the cave makes an excellent roadside attraction on the east side of Bryce Canyon National Park. It is popular. A short hike leads to a photographer's paradise. The ease and length of this outing make it a good family friendly stop to stretch legs while passing near Bryce.
On highway 12, Mossy Cave is approximately 4 miles east of the junction of Highway 12 and 63. (Alternatively, it is a little over 3 miles west of the town of Tropic.) It is a large pullout on the right (west) side of the road. The trail head has a trail sign and map near the parking area.
From the trailhead, simply follow the wide, well-defined trail. After a short distance (0.25 miles) and two bridge crossings, you will reach a junction. Left is the way to Mossy Cave in 100 meters or so. Right takes you to a very scenic waterfall, also in a 100 meters or so.
There are many great photographic opportunities in this area. Evening seemed to have the best light.
12S 402090mE 4169305mN
N37° 39' 57" W112° 06' 37"