The llIawarra escarpment is one of the most striking features of the N.S.W. coast, for it runs like a great unbreached wall for some 120km, and dominates the narrow plains below. Vet little hes been written about it, and some of the brief commentaries that have appeared are incorrect. This account outlines the major feature. of the escarpment, its origins, and also the hazards of land slip encountered on its slopes.