Kiama·NSW
Kiama Blowhole
A sea cave that fires a plume of water over the walkway when the south-easterly swell is running.

Around 20km of headland and beach track. Do the Kiama to Minnamurra leg if you only want a morning.
Ashishlohorung / Wikimedia Commons (CC BY-SA 3.0)
While you are there
Kiama·NSW
A sea cave that fires a plume of water over the walkway when the south-easterly swell is running.