The cliffs here are formed of tilted layers of Permian rocks. The cliffs are somewhat fractured and crumbly, and overhang in places. You can fairly easily move southwards around the wave-cut platforms for a short distance.
There is also this dyke of igneous rock which has intruded into the sedimentary rocks, cutting across beds, splitting them apart, and climbing the cliff. I'm assuming it's dolerite, as this is in evidence nearby at Tinderbox.