The stability of the limestone scarp along Kings Park will be closely monitored during winter, with geotechnical experts warning that wild weather can increase the risk of rockfalls and landslides.

The Mt Eliza scarp rises about 60 metres at its highest point and almost 20 years of European settlement and modifications to the rock formation have created cliff faces and steep slopes prone to landslides. The Botanic Gardens and Parks Authority has appointed specialist consultants to undertake three detailed geotechnical inspections each year, before, during and after winter.

Past rockfalls have affected areas including Mounts Bay Road, while heavy rainfall is considered a major trigger for rock movement. Recent incidents have included the removal of large numbers of mature trees whose roots helped bind the rockface, and Lovers Walk was permanently closed about 12 months ago and demolished to reshape the scarp.

The inspections will identify hazards and recommend actions to reduce risks, with the resulting report also recording changes in slope conditions, including remedial works and photographic monitoring of areas considered high risk or of concern. Geological hazards considered an immediate to short-term risk will also be identified.

Kings Park staff carry out their own inspections following significant rain events, defined as 20mm within 24 hours in Kings Park and 25mm at Bold Park, and can call geotechnical advisers around the clock during emergencies.