From Geoscience Australia
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Shore Safety Brochure

Created 16/10/2025

Updated 16/10/2025

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Why do cliffs and overhangs drop rocks? Cliffs are formed and wear away by erosion. Water and wind blast the rock with solid particles, waves pound the cliffs, and water dissolves minerals in the rocks. As the cliffs wear away, they form overhangs that weaken, break and fall suddenly. Rocks can also fall off cliffs if water or tree roots enter cracks behind the cliff face. On 27 September 1996, people were sheltering under an overhang in a limestone cliff near Gracetown, Western Australia. The overhang and part of the cliff behind collapsed, and about 2500 tonne of rock and sand fell. Nine people were killed and three others injured. The collapse was partly attributed to the rock absorbing water and becoming heavier. Remember, it is natural for rocks to fall off cliffs!

Files and APIs

Tags

Additional Info

Field Value
Title Shore Safety Brochure
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/010ad89f-aa5e-4192-9f4e-d6f9f59d0733
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Shore Safety Brochure". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/shore-safety-brochure