Located along the Trillium Gap Trail – off the Roaring Fork Motor Nature Trail – Grotto Falls is a nearly 3-mile, out-and-back hike that runs behind a 25-foot waterfall. It's the only ...

Or, hike to explore Rainbow Falls and Grotto Falls. Due to the steep, windy nature of the road, buses, trailers and motorhomes are prohibited. This seasonal trail closes for the winter on Dec. 1 ...

Rainbow Falls and Grotto Falls. Along the loop, you'll see historic log cabins, gristmills and an array of wildlife, which may include birds, deer and black bears. Stop for a self-guided walking ...