This trail starts at the end of Hyalite Canyon. The trail is a smooth gravel bed wide enough to drive a truck down. A short distance down the trail there is a large clearing on the creek that has been used as a camping area many times. Just past this, the trail divides into two, the main trail still very wide and smooth, and the 2nd trail just slightly less wide and smooth. It parallels the trail to the right, then to the left, and when it crosses to the right again, the main trail begins a large, gentle switchback. Hit the slightly smaller trail for a nice shortcut, then when the main trail comes back, turn right onto it to get to the waterfall. Just before reaching Grotto Falls, there is a picnic table across from the most interesting rock garden I've ever seen. The grotto that the falls are named after is actually quite puny compared to the grottos on most waterfalls in the Ozarks, but the waterfall is gorgeous. There is a giant tree across the stream that provides access to the other bank, if you've got good balance. Head back the way you came, or extend your hike by heading up to one of the many other falls in Hyalite Canyon.