In the heart of the Bellinger Valley, the Glennifer-Promised Land area is framed by a dramatic escarpment. This formidable landscape is defined by ancient, erosion-resistant rocks exposed from the Moonbil sedimentary beds, consisting of fine-grained siltstones, slate and chert. The escarpment forms a natural boundary, with the land dropping a staggering 970 metres from the plateau to the valley floor.