There is a public diamond mine in Murfreesboro, AR. The only public diamond in the world. We’ve never been to a diamond mine, and this being the only public one in the world, we figured we better go check into it. Also, Murfreesboro is in our ‘general direction of Sioux Falls, SD’ path. Jake likes looking for diamonds because he enjoys boring stuff. We headed towards Crater of Diamonds State Park (the only public diamond mine), figuring we’d have no problem just calling an RV park on the way there to find a place to stay. Well, that was our…