The cave is located near the base of Cumberland Plateau in Grundy County. Back in the days of the Dixie Highway and later highway US41, the turn to get to the cave was located at the last turn before making the ascent to Monteagle. Everyone travelling from Nashville to Chattanooga would have passed nearby, about a mile from here. As has been the case with many "impulse" tourist attractions, the opening of the interstate killed off this business. Now people take I-24 through the area and the Cave soon went out of business. It reopened again but soon closed again circa 2000. Even though it's not open commercially these days, I hear it's possible to get in the cave if you do a little research, not that I'm advocating you hop the fence I'm standing behind right here. There's a sign on the front of the building on the right. Part of the paint has worn off and you can see how it used to be a sign for people selling loans. (unless Wonder Cave tried to make loans as a method to stay open.)