They include sections on Aboriginal heritage, showing some of the shell
middens accumulated over 10,000 years and more which are visible in the ever - shifting sands.
These
middens of
accumulated faecal pellets and a brown tar - like substance known as hyraceum (a urinary product composed of organic elements, soluble salts, and carbonates; Leon and Belonje 1979) trap plant material, pollen, and animal remains.