The rocks of the Romerkhall Waterfall consist mainly of limestones. In the Upper Devonian, about 370 million years ago, the area was covered by a sea. It was divided into basins and ridges. Limes were deposited on the ridges, which were closer to the surface of the water (carbonatic threshold facies of the Upper Harz Upper Devonian). About 300 million years ago, the rocks were folded, sunk, metamorphosed by intruding granites, later uplifted again, and then exposed by erosion. That is how this old limestone comes to form the rocks over which the waterfall drops as well as the Rabenklippe crags to the west. In the intervening Oker valley is argillaceous Kulm slate. There is a path up to the top of the waterfall on the hillside north of the rocks. At its foot, a few metres of dark slate-hornfels rocks of the Lower Carboniferous have been exposed. The waterfall rocks at the lookout platform consists of upper Devonian limestones, which are tectonically heavily deformed. About 290 million years ago, the molten Oker granite nearby hardened and overprinted all the nearby rocks in a process known as contact metamorphism.