Mercer Caverns is less than a half mile from downtown Murphys, but unless you are in super shape I strongly advise you not to walk it. Sheep Ranch road starts out with a mild upgrade but about halfway there it turns into a VERY steep downhill. Which means a VERY steep uphill after climbing down and up the Mercer Cavern stairs. Mercer is very different from Moaning Caverns which is about 10-12 miles southwest from here. Moaning Caverns is a huge open area with impressive stalagmites. But it is mostly a drab tan color inside. Mercer Caverns is instead a large collection of much smaller caverns but much more colorful. Especially the ribbon runs. Note that it is a steep stairway down and the same coming out but worth the effort if you enjoy caving.