 The ravine was created when the Wisconsin glacier melted and the melt water created a stream by traveling through the weaknesses of the bedrock of the Kittatinny Mountains.Tillman Creek flows over Buttermilk Falls and joins the Flat Brook in the Delaware Water Gap National Recreation Area two-miles south of the hamlet of Walpack Centre in Walpack Township, New Jersey.The New Jersey School of Conservation is one of the largest university run camps in the state of New Jersey, operated by and part of Montclair State University, in Montclair as its Environmental Education Field Campus.