Erratic was a contribution to the day long workshop ' Rock Up!' led by the Rocky Climates Network for Art Houses Festival 2022. This artwork included a live participatory drawing event, framed by narrating the story of the rocky foreshore, linking the etymology of drawing from the old english 'dragan' to the act of dragging and the way the boulder clay on the cliffs had been dragged and deposited by glacial action, and how the coal had once been a large forest when the land was near the equator. Rocks from the beach were dragged across paper, making rubbings of stones and fossils found on the beach, recording the traces of contact between two rocky surfaces. In addition to participants on the beach, the event was live streamed to an audience over zoom. An artist book was made as documentation of this work.