Due to fluvial processes on its levels of clay and sand and with ongoing property development, landslips on Olivers Hill are historically common. The first recorded landslip was in 1854 with at least one occurring again every decade up to the present day. A landslip once occurred in the 1960s during a live radio show hosted by media personality Graham Kennedy from his house on Olivers Hill, where he and his co-host Mike Walsh described how his driveway was "slipping down the slope", as they spoke on air. The most recent serious landslips occurred in 2007, 2012 and 2015. In all three of the occurrences, the fallen debris has blocked lanes on Nepean Highway.