Very interesting area. The seaward of the two holes isn't any good to penetrate but the inland one is deep and moist. It "pops" out into a sea cave below. It's a walk in at a spring low tide but involves a cheeky scramble. Happy holing
Vid of the smut in question: www.facebook.com/CarbisBayCrew/videos/1633801730028042/
I've been meaning to have a fiddle through the estate records and figure out wazzon with the old stuff there, but CRO closed before I could lick my fingers.