Many many people visit the Rose Valley Waterfall since it is a very easy half mile hike from the trailhead. Most of them do not know that there is a cave behind the waterfall. You have to get on your hands and knees to enter, but once inside, you can stand up. It is a travertine cave, with small stalactites and stalagmites.....and I set a GEOCACHE in there years ago. It had gone missing, so my brother, and my nephew Braydonm joined me in a little geocaching maintenance run to replace it. Here is a video I put together.