Point Lonsdale "The Heads" 🌏 EarthCache EarthCache

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Welcome to

Point Lonsdale "The Heads" EarthCache

A simple EarthCache to highlight the landform that has been formed through weathering action of wind, rain and wave

Also an excellent place to explore at low tide especially around the rock pool and cave

Many of the rocks that make up the cliffs as well as reef below the water are made of ancient dune limestone or calcarenite. This readily weathered rock is made of sand grains that have been cemented together by the high amounts of calcium carbonate derived from shells with some sections covered with sand and has a wide variety of exposure. There are numerous beds with the variable dip characteristic of the calcarenite formations well exposed both in the cliffs, the shore platform and in small cliff stacks in front of the lighthouse.

The upper section of the cliffs shows an irregular kunkar or travertine layer up to 1 m thick developed in the dune limestone. Buckleys Cave which has been partly excavated by wind and storm wave action has a sandy floor about 2 m above high water mark. The narrow entrance (closed by a locked steel grille), opens to a chamber approximately 4 m wide, 15 m long and 3 m high

 The shore platform extends approximately 200 m eastward of the lighthouse cliffs forming an intertidal peninsula into Port Phillip Bay. Extending beyond the exposed platform towards the entrance to Port Phillip Bay, are reefs and intertidal islands which are remnants of the earlier stages of platform and cliff development

Questions to log this EarthCache

Q1 Describe the Layers and which direction do they run

Q2 What colours do you see in the rock stack and describe the texture of the rock?

​Q3 Is Buckleys cave on the first or second tier of the bluestone walls?

Hope you enjoyed this EarthCache & please feel free to upload a photo too

Please send your answers to "" through Message Center or through email.

Please feel free to log this cache once you've completed the EarthCache requirements while waiting for a response to your answers.
You will need to send me your answers to verify your find for this EarthCache and will most likely hear from me within 24 hours or if in the unlikely event, a correction or more detail is needed